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207 relations: Acanthocephala, Acid mine drainage, Aleutian Islands, Ameiurus, American alligator, American black bear, American bullfrog, American coot, American crocodile, American mink, American wigeon, Amphibian, Anal gland, Anatomical terms of location, Animal, Animal latrine, Animal migration, Anseriformes, Apicomplexa, Aquatic insect, Bass (fish), Beaver, Beetle, Beringia, Biodiversity, Bioindicator, Bird, Birth, Bobcat, Bog, Brooks Range, Burrow, California chaparral and woodlands, Cambarus, Canadian toad, Canine distemper, Canine tooth, Canvasback, Carnassial, Carnivora, Carnivore, Carp, Carrion, Cat communication, Catfish, Catostomidae, Catostomus, Central mudminnow, Centrarchidae, Cestoda, ..., Chordate, Coal mining, Colorado River Delta, Common carp, Common snapping turtle, Corpus callosum, Corpus luteum, Cougar, Coyote, Coypu, Crayfish, Crepuscular animal, Crustacean, CTV News, Cyprinidae, Darter (fish), Dentition, Deserts and xeric shrublands, Diurnality, Dog, Dragonfly, Duck, East Coast of the United States, Eastern cottontail, Embryonic diapause, Endemism, Esox, Estrous cycle, Eurasian otter, European colonization of the Americas, Feline panleukopenia, Fish, Flea, Freshwater bivalve, Freshwater snail, Frog, Fruit, Fur, Game fish, Garter snake, Gestation, Giant otter, Glacier, Gray wolf, Great Lakes, Green-winged teal, Grizzly bear, Groundhog, Gulf of Mexico, Habitat destruction, Haptoglobin, Hearing, Hepatitis, Insect, Interleukin 6, Irvingtonian, Isthmus, Isthmus of Panama, IUCN Red List, Jaundice, Johann Christian Daniel von Schreber, Killer whale, KIRO-TV, Least-concern species, List of semiaquatic tetrapods, Lithobates clamitans, Log jam, Lontra, Lung, Lutra, Mallard, Mammal, Marine mammal, Meadow vole, Mercury (element), Midwestern United States, Miocene, Mojave Desert, Molar (tooth), Mollusca, Moulting, Moxostoma, Musk, Mussel, Mustelidae, Naturalism (philosophy), Nematode, New England, New World, Nictitating membrane, Nocturnality, North America, North American beaver, Northern pintail, Old World, Olfaction, Organochloride, Otter, Pacifastacus, Pacific coast, Pacific giant salamander, Pacific Northwest, Parasitism, Perch, Pheasant, Pinophyta, Plecoptera, Pliocene, Pneumonia, Polar bear, Pollution, Polygyny, Premolar, Prince Edward Island, Ptychocheilus, Rabies, Rail (bird), Red fox, Reptile, Rhinarium, Rio Grande, Riparian zone, River, Rough-skinned newt, Ruddy duck, Salamander, Salmon, San Francisco, San Francisco Zoo, Sculpin, Semotilus, Senescence, Sexual dimorphism, Sexual intercourse, Skull, Snowshoe hare, Social grooming, Southern California, Spawn (biology), Species richness, Spraint, Subspecies, Sucking louse, Sutro Baths, Terrestrial animal, Territory (animal), Tick, Trachea, Trematoda, Trout, Turtle, Urinary tract infection, Walleye, Weaning, WFLA-TV, Whiskers, Wood frog. Expand index (157 more) »
Acanthocephala
Acanthocephala (Greek ἄκανθος, akanthos, thorn + κεφαλή, kephale, head) is a phylum of parasitic worms known as acanthocephalans, thorny-headed worms, or spiny-headed worms, characterized by the presence of an eversible proboscis, armed with spines, which it uses to pierce and hold the gut wall of its host.
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Acid mine drainage
Acid mine drainage, acid and metalliferous drainage (AMD), or acid rock drainage (ARD) is the outflow of acidic water from metal mines or coal mines.
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Aleutian Islands
The Aleutian Islands (Tanam Unangaa, literally "Land of the Aleuts", possibly from Chukchi aliat, "island") are a chain of 14 large volcanic islands and 55 smaller ones belonging to both the U.S. state of Alaska and the Russian federal subject of Kamchatka Krai.
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Ameiurus
Ameiurus is a genus of catfishes in the family Ictaluridae.
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American alligator
The American alligator (Alligator mississippiensis), sometimes referred to colloquially as a gator or common alligator, is a large crocodilian reptile endemic to the southeastern United States.
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American black bear
The American black bear (Ursus americanus) is a medium-sized bear native to North America.
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American bullfrog
The American bullfrog (Lithobates catesbeianus or Rana catesbeiana), often simply known as the bullfrog in Canada and the United States, is an amphibious frog, a member of the family Ranidae, or “true frogs”.
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American coot
The American coot (Fulica americana), also known as a mud hen, is a bird of the family Rallidae.
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American crocodile
The American crocodile (Crocodylus acutus) is a species of crocodilian found in the Neotropics.
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American mink
The American mink (Neovison vison) is a semiaquatic species of mustelid native to North America, though human intervention has expanded its range to many parts of Europe and South America.
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American wigeon
The American wigeon (Mareca americana), also called a baldpate, is a species of dabbling duck found in North America.
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Amphibian
Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia.
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Anal gland
The anal glands or anal sacs are small glands found near the anus in many mammals, including dogs and cats.
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Anatomical terms of location
Standard anatomical terms of location deal unambiguously with the anatomy of animals, including humans.
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Animal
Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia.
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Animal latrine
Animal latrines (latrine areas, animal toilets, defecation sites) are places where wildlife animals habitually defecate and urinate.
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Animal migration
Animal migration is the relatively long-distance movement of individual animals, usually on a seasonal basis.
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Anseriformes
Anseriformes is an order of birds that comprise about 180 living species in three families: Anhimidae (the screamers), Anseranatidae (the magpie goose), and Anatidae, the largest family, which includes over 170 species of waterfowl, among them the ducks, geese, and swans.
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Apicomplexa
The Apicomplexa (also called Apicomplexia) are a large phylum of parasitic alveolates.
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Aquatic insect
Aquatic insects or water insects live some portion of their life cycle in the water.
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Bass (fish)
Bass is a name shared by many species of fish.
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Beaver
The beaver (genus Castor) is a large, primarily nocturnal, semiaquatic rodent.
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Beetle
Beetles are a group of insects that form the order Coleoptera, in the superorder Endopterygota.
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Beringia
Beringia is defined today as the land and maritime area bounded on the west by the Lena River in Russia; on the east by the Mackenzie River in Canada; on the north by 72 degrees north latitude in the Chukchi Sea; and on the south by the tip of the Kamchatka Peninsula.
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Biodiversity
Biodiversity, a portmanteau of biological (life) and diversity, generally refers to the variety and variability of life on Earth.
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Bioindicator
A bioindicator is any species (an indicator species) or group of species whose function, population, or status can reveal the qualitative status of the environment.
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Bird
Birds, also known as Aves, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.
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Birth
Birth is the act or process of bearing or bringing forth offspring.
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Bobcat
The bobcat (Lynx rufus) is a North American cat that appeared during the Irvingtonian stage of around 1.8 million years ago (AEO).
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Bog
A bog is a wetland that accumulates peat, a deposit of dead plant material—often mosses, and in a majority of cases, sphagnum moss.
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Brooks Range
The Brooks Range (Athabaskan Gwazhał) is a mountain range in far northern North America stretching some from west to east across northern Alaska into Canada's Yukon Territory.
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Burrow
A burrow is a hole or tunnel excavated into the ground by an animal to create a space suitable for habitation, temporary refuge, or as a byproduct of locomotion.
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California chaparral and woodlands
The California chaparral and woodlands is a terrestrial ecoregion of lower northern, central, and southern California (United States) and northwestern Baja California (Mexico), located on the west coast of North America.
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Cambarus
Cambarus is a large and diverse genus of North American crayfish.
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Canadian toad
The Canadian toad (also Dakota toad, Anaxyrus hemiophrys) is a species of toad that ranges from the prairie regions of central Canada south to parts of United States upper midwest.
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Canine distemper
Canine distemper (sometimes termed hardpad disease) is a viral disease that affects a wide variety of animal families, including domestic and wild species of dogs, coyotes, foxes, pandas, wolves, ferrets, skunks, raccoons, and large cats, as well as pinnipeds, some primates, and a variety of other species.
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Canine tooth
In mammalian oral anatomy, the canine teeth, also called cuspids, dog teeth, fangs, or (in the case of those of the upper jaw) eye teeth, are relatively long, pointed teeth.
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Canvasback
The canvasback (Aythya valisineria) is a species of diving duck, the largest found in North America.
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Carnassial
Carnassials are paired upper and lower teeth (either molars or premolars and molars) modified in such a way as to allow enlarged and often self-sharpening edges to pass by each other in a shearing manner.
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Carnivora
Carnivora (from Latin carō (stem carn-) "flesh" and vorāre "to devour") is a diverse scrotiferan order that includes over 280 species of placental mammals.
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Carnivore
A carnivore, meaning "meat eater" (Latin, caro, genitive carnis, meaning "meat" or "flesh" and vorare meaning "to devour"), is an organism that derives its energy and nutrient requirements from a diet consisting mainly or exclusively of animal tissue, whether through predation or scavenging.
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Carp
Carp are various species of oily freshwater fish from the family Cyprinidae, a very large group of fish native to Europe and Asia.
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Carrion
Carrion (from Latin caro, meaning "meat") is the decaying flesh of a dead animal.
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Cat communication
Cat communication is the transfer of information by one or more cats that has an effect on the current or future behaviour of another animal, including humans.
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Catfish
Catfish (or catfishes; order Siluriformes or Nematognathi) are a diverse group of ray-finned fish.
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Catostomidae
The Catostomidae are the suckers of the order Cypriniformes, with about 78 species in this family of freshwater fishes.
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Catostomus
Catostomus is a genus of fish belonging to the family Catostomidae, commonly known as suckers.
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Central mudminnow
The central mudminnow (Umbra limi) is a small fish in the family Umbridae of the order Esociformes.
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Centrarchidae
Centrarchidae (better known as sunfish) are a family of freshwater ray-finned fish belonging to the order Perciformes.
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Cestoda
Cestoda is a class of parasitic worms in the flatworm (Platyhelminthes) phylum, commonly known as tapeworms.
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Chordate
A chordate is an animal belonging to the phylum Chordata; chordates possess a notochord, a hollow dorsal nerve cord, pharyngeal slits, an endostyle, and a post-anal tail, for at least some period of their life cycle.
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Coal mining
Coal mining is the process of extracting coal from the ground.
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Colorado River Delta
The Colorado River Delta is the region where the Colorado River flows into the Gulf of California (also known as the Sea of Cortez).
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Common carp
The common carp or European carp (Cyprinus carpio) is a widespread freshwater fish of eutrophic waters in lakes and large rivers in Europe and Asia.
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Common snapping turtle
The common snapping turtle (Chelydra serpentina) is a large freshwater turtle of the family Chelydridae.
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Corpus callosum
The corpus callosum (Latin for "tough body"), also callosal commissure, is a wide commissure, a flat bundle of commissural fibers, about 10 cm long beneath the cerebral cortex in the brains of placental mammals.
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Corpus luteum
The corpus luteum (Latin for "yellow body"; plural corpora lutea) is a temporary endocrine structure in female ovaries and is involved in the production of relatively high levels of progesterone, moderate levels of estradiol, inhibin A and small amounts of estrogen.
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Cougar
The cougar (Puma concolor), also commonly known as the mountain lion, puma, panther, or catamount, is a large felid of the subfamily Felinae native to the Americas.
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Coyote
The coyote (Canis latrans); from Nahuatl) is a canine native to North America. It is smaller than its close relative, the gray wolf, and slightly smaller than the closely related eastern wolf and red wolf. It fills much of the same ecological niche as the golden jackal does in Eurasia, though it is larger and more predatory, and is sometimes called the American jackal by zoologists. The coyote is listed as least concern by the International Union for Conservation of Nature due to its wide distribution and abundance throughout North America, southwards through Mexico, and into Central America. The species is versatile, able to adapt to and expand into environments modified by humans. It is enlarging its range, with coyotes moving into urban areas in the Eastern U.S., and was sighted in eastern Panama (across the Panama Canal from their home range) for the first time in 2013., 19 coyote subspecies are recognized. The average male weighs and the average female. Their fur color is predominantly light gray and red or fulvous interspersed with black and white, though it varies somewhat with geography. It is highly flexible in social organization, living either in a family unit or in loosely knit packs of unrelated individuals. It has a varied diet consisting primarily of animal meat, including deer, rabbits, hares, rodents, birds, reptiles, amphibians, fish, and invertebrates, though it may also eat fruits and vegetables on occasion. Its characteristic vocalization is a howl made by solitary individuals. Humans are the coyote's greatest threat, followed by cougars and gray wolves. In spite of this, coyotes sometimes mate with gray, eastern, or red wolves, producing "coywolf" hybrids. In the northeastern United States and eastern Canada, the eastern coyote (a larger subspecies, though still smaller than wolves) is the result of various historical and recent matings with various types of wolves. Genetic studies show that most North American wolves contain some level of coyote DNA. The coyote is a prominent character in Native American folklore, mainly in the Southwestern United States and Mexico, usually depicted as a trickster that alternately assumes the form of an actual coyote or a man. As with other trickster figures, the coyote uses deception and humor to rebel against social conventions. The animal was especially respected in Mesoamerican cosmology as a symbol of military might. After the European colonization of the Americas, it was reviled in Anglo-American culture as a cowardly and untrustworthy animal. Unlike wolves (gray, eastern, or red), which have undergone an improvement of their public image, attitudes towards the coyote remain largely negative.
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Coypu
The coypu (Myocastor coypus), also known as the nutria, is a large, herbivorous, semiaquatic rodent.
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Crayfish
Crayfish, also known as crawfish, crawdads, crawldads, freshwater lobsters, mountain lobsters, mudbugs or yabbies, are freshwater crustaceans resembling small lobsters, to which they are related; taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea.
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Crepuscular animal
Crepuscular animals are those that are active primarily during twilight (that is, the periods of dawn and dusk).
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Crustacean
Crustaceans (Crustacea) form a large, diverse arthropod taxon which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill, woodlice, and barnacles.
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CTV News
CTV News is the news division of the CTV Television Network in Canada.
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Cyprinidae
The Cyprinidae are the family of freshwater fishes, collectively called cyprinids, that includes the carps, the true minnows, and their relatives (for example, the barbs and barbels).
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Darter (fish)
The fish popularly known as darters are small, perch-like fish found in freshwater streams in North America.
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Dentition
Dentition pertains to the development of teeth and their arrangement in the mouth.
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Deserts and xeric shrublands
Deserts and xeric shrublands are a biome characterized by receiving only a small amount of moisture, usually defined as less than 250 mm of annual precipitation.
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Diurnality
Diurnality is a form of plant or animal behavior characterized by activity during the day, with a period of sleeping, or other inactivity, at night.
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Dog
The domestic dog (Canis lupus familiaris when considered a subspecies of the gray wolf or Canis familiaris when considered a distinct species) is a member of the genus Canis (canines), which forms part of the wolf-like canids, and is the most widely abundant terrestrial carnivore.
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Dragonfly
A dragonfly is an insect belonging to the order Odonata, infraorder Anisoptera (from Greek ἄνισος anisos, "uneven" and πτερόν pteron, "wing", because the hindwing is broader than the forewing).
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Duck
Duck is the common name for a large number of species in the waterfowl family Anatidae, which also includes swans and geese.
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East Coast of the United States
The East Coast of the United States is the coastline along which the Eastern United States meets the North Atlantic Ocean.
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Eastern cottontail
The eastern cottontail (Sylvilagus floridanus) is a New World cottontail rabbit, a member of the family Leporidae.
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Embryonic diapause
Delayed implantation or embryonic diapause is a reproductive strategy used by approximately 100 different mammals in seven or eight different orders.
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Endemism
Endemism is the ecological state of a species being unique to a defined geographic location, such as an island, nation, country or other defined zone, or habitat type; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere.
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Esox
Esox is a genus of freshwater fish, the only living genus in the family Esocidae—the esocids which were endemic to North America and Eurasia during the Paleogene through present.
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Estrous cycle
The estrous cycle or oestrus cycle (derived from Latin oestrus 'frenzy', originally from Greek οἶστρος oîstros 'gadfly') is the recurring physiological changes that are induced by reproductive hormones in most mammalian therian females.
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Eurasian otter
The Eurasian otter (Lutra lutra), also known as the European otter, Eurasian river otter, common otter, and Old World otter, is a semiaquatic mammal native to Eurasia.
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European colonization of the Americas
The European colonization of the Americas describes the history of the settlement and establishment of control of the continents of the Americas by most of the naval powers of Europe.
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Feline panleukopenia
Feline panleukopenia virus (FPV), also known as feline infectious enteritis, feline parvoviral enteritis, feline distemper, feline ataxia, or cat plague, is a viral infection affecting cats, both domesticated and wild feline species.
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Fish
Fish are gill-bearing aquatic craniate animals that lack limbs with digits.
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Flea
Fleas are small flightless insects that form the order Siphonaptera.
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Freshwater bivalve
Freshwater bivalves are one kind of freshwater molluscs, along with freshwater snails.
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Freshwater snail
Freshwater snails are gastropod mollusks which live in freshwater.
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Frog
A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura (Ancient Greek ἀν-, without + οὐρά, tail).
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Fruit
In botany, a fruit is the seed-bearing structure in flowering plants (also known as angiosperms) formed from the ovary after flowering.
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Fur
Fur is the hair covering of non-human mammals, particularly those mammals with extensive body hair that is soft and thick.
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Game fish
Game fish are fish pursued by recreational anglers.
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Garter snake
Garter snake (in addition to ribbon snake) is a common name for the nearly harmless, small to medium-sized snakes belonging to the genus Thamnophis.
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Gestation
Gestation is the carrying of an embryo or fetus inside viviparous animals.
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Giant otter
The giant otter or giant river otter (Pteronura brasiliensis) is a South American carnivorous mammal.
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Glacier
A glacier is a persistent body of dense ice that is constantly moving under its own weight; it forms where the accumulation of snow exceeds its ablation (melting and sublimation) over many years, often centuries.
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Gray wolf
The gray wolf (Canis lupus), also known as the timber wolf,Paquet, P. & Carbyn, L. W. (2003).
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Great Lakes
The Great Lakes (les Grands-Lacs), also called the Laurentian Great Lakes and the Great Lakes of North America, are a series of interconnected freshwater lakes located primarily in the upper mid-east region of North America, on the Canada–United States border, which connect to the Atlantic Ocean through the Saint Lawrence River.
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Green-winged teal
The green-winged teal (Anas carolinensis or Anas crecca carolinensis) is a common and widespread duck that breeds in the northern areas of North America except on the Aleutian Islands.
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Grizzly bear
The grizzly bear (Ursus arctos ssp.) is a large population of the brown bear inhabiting North America.
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Groundhog
The groundhog (Marmota monax), also known as a woodchuck, is a rodent of the family Sciuridae, belonging to the group of large ground squirrels known as marmots.
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Gulf of Mexico
The Gulf of Mexico (Golfo de México) is an ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent.
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Habitat destruction
Habitat destruction is the process in which natural habitat is rendered unable to support the species present.
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Haptoglobin
Haptoglobin (abbreviated as Hp) is the protein that in humans is encoded by the HP gene.
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Hearing
Hearing, or auditory perception, is the ability to perceive sounds by detecting vibrations, changes in the pressure of the surrounding medium through time, through an organ such as the ear.
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Hepatitis
Hepatitis is inflammation of the liver tissue.
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Insect
Insects or Insecta (from Latin insectum) are hexapod invertebrates and the largest group within the arthropod phylum.
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Interleukin 6
Interleukin 6 (IL-6) is an interleukin that acts as both a pro-inflammatory cytokine and an anti-inflammatory myokine.
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Irvingtonian
The Irvingtonian North American Land Mammal Age on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), typically set from 1,350,000 to 160,000 years BP, a period of.
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Isthmus
An isthmus (or; plural: isthmuses; from neck) is a narrow piece of land connecting two larger areas across an expanse of water by which they are otherwise separated.
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Isthmus of Panama
The Isthmus of Panama (Istmo de Panamá), also historically known as the Isthmus of Darien (Istmo de Darién), is the narrow strip of land that lies between the Caribbean Sea and the Pacific Ocean, linking North and South America.
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IUCN Red List
The IUCN Red List of Threatened Species (also known as the IUCN Red List or Red Data List), founded in 1964, has evolved to become the world's most comprehensive inventory of the global conservation status of biological species.
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Jaundice
Jaundice, also known as icterus, is a yellowish or greenish pigmentation of the skin and whites of the eyes due to high bilirubin levels.
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Johann Christian Daniel von Schreber
Johann Christian Daniel von Schreber (17 January 1739 in Weißensee, Thuringia – 10 December 1810 in Erlangen), often styled J.C.D. von Schreber, was a German naturalist.
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Killer whale
| status.
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KIRO-TV
KIRO-TV, virtual channel 7 (UHF digital channel 39), is a CBS-affiliated television station licensed to Seattle, Washington, United States and also serving Tacoma.
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Least-concern species
A least concern (LC) species is a species which has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated but not qualified for any other category.
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List of semiaquatic tetrapods
This is a list of tetrapods that are semiaquatic; that is, while being at least partly terrestrial, they spend part of their life cycle or a significant fraction of their time in water as part of their normal behavior, and/or obtain a significant fraction of their food from an aquatic habitat.
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Lithobates clamitans
The green frog (Lithobates clamitans or Rana clamitans) is a species of frog native to the eastern half of the United States and Canada.
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Log jam
A log jam is an accumulation of large wood (commonly defined as pieces of wood more than in diameter and more than long also commonly called large woody debris) that can span an entire stream or river channel.
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Lontra
Lontra is a genus of otters from the Americas.
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Lung
The lungs are the primary organs of the respiratory system in humans and many other animals including a few fish and some snails.
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Lutra
Lutra is a genus of otters, one of seven in the subfamily Lutrinae.
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Mallard
The mallard (Anas platyrhynchos) is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurasia, and North Africa and has been introduced to New Zealand, Australia, Peru, Brazil, Uruguay, Argentina, Chile, Colombia, the Falkland Islands, and South Africa.
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Mammal
Mammals are the vertebrates within the class Mammalia (from Latin mamma "breast"), a clade of endothermic amniotes distinguished from reptiles (including birds) by the possession of a neocortex (a region of the brain), hair, three middle ear bones, and mammary glands.
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Marine mammal
Marine mammals are aquatic mammals that rely on the ocean and other marine ecosystems for their existence.
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Meadow vole
The meadow vole (Microtus pennsylvanicus), sometimes called the field mouse or meadow mouse, is a North American vole found across Canada, Alaska and the northern United States.
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Mercury (element)
Mercury is a chemical element with symbol Hg and atomic number 80.
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Midwestern United States
The Midwestern United States, also referred to as the American Midwest, Middle West, or simply the Midwest, is one of four census regions of the United States Census Bureau (also known as "Region 2").
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Miocene
The Miocene is the first geological epoch of the Neogene Period and extends from about (Ma).
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Mojave Desert
The Mojave Desert is an arid rain-shadow desert and the driest desert in North America.
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Molar (tooth)
The molars or molar teeth are large, flat teeth at the back of the mouth.
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Mollusca
Mollusca is a large phylum of invertebrate animals whose members are known as molluscs or mollusksThe formerly dominant spelling mollusk is still used in the U.S. — see the reasons given in Gary Rosenberg's.
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Moulting
In biology, moulting (British English), or molting (American English), also known as sloughing, shedding, or in many invertebrates, ecdysis, is the manner in which an animal routinely casts off a part of its body (often, but not always, an outer layer or covering), either at specific times of the year, or at specific points in its life cycle.
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Moxostoma
Moxostoma is a genus of North American ray-finned fish in the Catostomidae family.
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Musk
Musk is a class of aromatic substances commonly used as base notes in perfumery.
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Mussel
Mussel is the common name used for members of several families of bivalve molluscs, from saltwater and freshwater habitats.
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Mustelidae
The Mustelidae (from Latin mustela, weasel) are a family of carnivorous mammals, including weasels, badgers, otters, martens, mink, and wolverines, among others.
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Naturalism (philosophy)
In philosophy, naturalism is the "idea or belief that only natural (as opposed to supernatural or spiritual) laws and forces operate in the world." Adherents of naturalism (i.e., naturalists) assert that natural laws are the rules that govern the structure and behavior of the natural universe, that the changing universe at every stage is a product of these laws.
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Nematode
The nematodes or roundworms constitute the phylum Nematoda (also called Nemathelminthes).
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New England
New England is a geographical region comprising six states of the northeastern United States: Maine, Vermont, New Hampshire, Massachusetts, Rhode Island and Connecticut.
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New World
The New World is one of the names used for the majority of Earth's Western Hemisphere, specifically the Americas (including nearby islands such as those of the Caribbean and Bermuda).
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Nictitating membrane
The nictitating membrane (from Latin nictare, to blink) is a transparent or translucent third eyelid present in some animals that can be drawn across the eye from the medial canthus for protection and to moisten it while maintaining vision.
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Nocturnality
Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day.
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North America
North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere; it is also considered by some to be a northern subcontinent of the Americas.
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North American beaver
The North American beaver (Castor canadensis) is one of two extant beaver species.
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Northern pintail
The pintail or northern pintail (Anas acuta) is a duck with wide geographic distribution that breeds in the northern areas of Europe, Asia and North America.
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Old World
The term "Old World" is used in the West to refer to Africa, Asia and Europe (Afro-Eurasia or the World Island), regarded collectively as the part of the world known to its population before contact with the Americas and Oceania (the "New World").
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Olfaction
Olfaction is a chemoreception that forms the sense of smell.
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Organochloride
An organochloride, organochlorine compound, chlorocarbon, or chlorinated hydrocarbon is an organic compound containing at least one covalently bonded atom of chlorine that has an effect on the chemical behavior of the molecule.
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Otter
Otters are carnivorous mammals in the subfamily Lutrinae.
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Pacifastacus
Pacifastacus is a genus of crayfish native to western North America (USA and Canada), containing the following six species (DD.
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Pacific coast
A country's Pacific coast is the part of its coast bordering the Pacific Ocean.
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Pacific giant salamander
Pacific giant salamanders (Dicamptodontidae) are a family of large salamanders from the United States and Canada.
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Pacific Northwest
The Pacific Northwest (PNW), sometimes referred to as Cascadia, is a geographic region in western North America bounded by the Pacific Ocean to the west and (loosely) by the Cascade Mountain Range on the east.
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Parasitism
In evolutionary biology, parasitism is a relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life.
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Perch
Perch is a common name for fish of the genus Perca, freshwater gamefish belonging to the family Percidae.
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Pheasant
Pheasants are birds of several genera within the subfamily Phasianinae, of the family Phasianidae in the order Galliformes.
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Pinophyta
The Pinophyta, also known as Coniferophyta or Coniferae, or commonly as conifers, are a division of vascular land plants containing a single extant class, Pinopsida.
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Plecoptera
The Plecoptera are an order of insects, commonly known as stoneflies.
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Pliocene
The Pliocene (also Pleiocene) Epoch is the epoch in the geologic timescale that extends from 5.333 million to 2.58 million years BP.
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Pneumonia
Pneumonia is an inflammatory condition of the lung affecting primarily the small air sacs known as alveoli.
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Polar bear
The polar bear (Ursus maritimus) is a hypercarnivorous bear whose native range lies largely within the Arctic Circle, encompassing the Arctic Ocean, its surrounding seas and surrounding land masses.
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Pollution
Pollution is the introduction of contaminants into the natural environment that cause adverse change.
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Polygyny
Polygyny (from Neoclassical Greek πολυγυνία from πολύ- poly- "many", and γυνή gyne "woman" or "wife") is the most common and accepted form of polygamy, entailing the marriage of a man with several women.
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Premolar
The premolar teeth, or bicuspids, are transitional teeth located between the canine and molar teeth.
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Prince Edward Island
Prince Edward Island (PEI or P.E.I.; Île-du-Prince-Édouard) is a province of Canada consisting of the island of the same name, and several much smaller islands.
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Ptychocheilus
Squawfish or pikeminnows are cyprinid fish of the genus Ptychocheilus consisting of four species native to western North America.
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Rabies
Rabies is a viral disease that causes inflammation of the brain in humans and other mammals.
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Rail (bird)
The rails, or Rallidae, are a large cosmopolitan family of small- to medium-sized ground-living birds.
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Red fox
The red fox (Vulpes vulpes) is the largest of the true foxes and one of the most widely distributed members of the order Carnivora, being present across the entire Northern Hemisphere from the Arctic Circle to North Africa, North America and Eurasia.
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Reptile
Reptiles are tetrapod animals in the class Reptilia, comprising today's turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives.
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Rhinarium
The rhinarium (New Latin, "belonging to the nose"; plural: rhinaria) is the naked skin surface surrounding the external openings of the nostrils in most mammals.
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Rio Grande
The Rio Grande (or; Río Bravo del Norte, or simply Río Bravo) is one of the principal rivers in the southwest United States and northern Mexico (the other being the Colorado River).
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Riparian zone
A riparian zone or riparian area is the interface between land and a river or stream.
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River
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river.
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Rough-skinned newt
The rough-skinned newt or roughskin newt (Taricha granulosa) is a North American newt known for the strong toxin exuded from its skin.
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Ruddy duck
The ruddy duck (Oxyura jamaicensis) is a duck from North America and one of the stiff-tailed ducks.
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Salamander
Salamanders are a group of amphibians typically characterized by a lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body, and the presence of a tail in both larvae and adults.
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Salmon
Salmon is the common name for several species of ray-finned fish in the family Salmonidae.
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San Francisco
San Francisco (initials SF;, Spanish for 'Saint Francis'), officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California.
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San Francisco Zoo
The San Francisco Zoo is a zoo located in the southwestern corner of San Francisco, California, between Lake Merced and the Pacific Ocean along the Great Highway.
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Sculpin
A sculpin is a type of fish that belongs to the superfamily Cottoidea in the order Scorpaeniformes.
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Semotilus
Semotilus is the genus of creek chubs, ray-finned fish in the Cyprinidae family.
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Senescence
Senescence or biological ageing is the gradual deterioration of function characteristic of most complex lifeforms, arguably found in all biological kingdoms, that on the level of the organism increases mortality after maturation.
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Sexual dimorphism
Sexual dimorphism is the condition where the two sexes of the same species exhibit different characteristics beyond the differences in their sexual organs.
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Sexual intercourse
Sexual intercourse (or coitus or copulation) is principally the insertion and thrusting of the penis, usually when erect, into the vagina for sexual pleasure, reproduction, or both.
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Skull
The skull is a bony structure that forms the head in vertebrates.
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Snowshoe hare
The snowshoe hare (Lepus americanus), also called the varying hare, or snowshoe rabbit, is a species of hare found in North America.
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Social grooming
Social grooming is a behaviour in which social animals, including humans, clean or maintain one another's body or appearance.
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Southern California
Southern California (colloquially known as SoCal) is a geographic and cultural region that generally comprises California's southernmost counties.
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Spawn (biology)
Spawn is the eggs and sperm released or deposited into water by aquatic animals.
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Species richness
Species richness is the number of different species represented in an ecological community, landscape or region.
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Spraint
Spraint is the dung of the otter.
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Subspecies
In biological classification, the term subspecies refers to a unity of populations of a species living in a subdivision of the species’s global range and varies from other populations of the same species by morphological characteristics.
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Sucking louse
Sucking lice (Anoplura, formerly known as Siphunculata) have around 500 species and represent the smaller of the two traditional suborders of lice.
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Sutro Baths
The Sutro Baths was a large, privately owned public saltwater swimming pool complex in the Lands End area of the Outer Richmond District in western San Francisco, California.
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Terrestrial animal
Terrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, spiders), as compared with aquatic animals, which live predominantly or entirely in the water (e.g., fish, lobsters, octopuses), or amphibians, which rely on a combination of aquatic and terrestrial habitats (e.g., frogs, or newts).
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Territory (animal)
In ethology, territory is the sociographical area that an animal of a particular species consistently defends against conspecifics (or, occasionally, animals of other species).
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Tick
Ticks are small arachnids, part of the order Parasitiformes.
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Trachea
The trachea, colloquially called the windpipe, is a cartilaginous tube that connects the pharynx and larynx to the lungs, allowing the passage of air, and so is present in almost all air-breathing animals with lungs.
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Trematoda
Trematoda is a class within the phylum Platyhelminthes.
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Trout
Trout is the common name for a number of species of freshwater fish belonging to the genera Oncorhynchus, Salmo and Salvelinus, all of the subfamily Salmoninae of the family Salmonidae.
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Turtle
Turtles are diapsids of the order Testudines (or Chelonii) characterized by a special bony or cartilaginous shell developed from their ribs and acting as a shield.
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Urinary tract infection
A urinary tract infection (UTI) is an infection that affects part of the urinary tract.
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Walleye
Walleye (Sander vitreus, synonym Stizostedion vitreum) is a freshwater perciform fish native to most of Canada and to the Northern United States.
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Weaning
Weaning is the process of gradually introducing an infant mammal to what will be its adult diet and withdrawing the supply of its mother's milk.
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WFLA-TV
WFLA-TV, virtual channel 8 (VHF digital channel 7), is an NBC-affiliated television station licensed to Tampa, Florida, United States and also serving the nearby city of St. Petersburg.
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Whiskers
Whiskers or vibrissae (singular: vibrissa) are a type of mammalian hair that are typically characterised, anatomically, by their large length, large and well-innervated hair follicle, and by having an identifiable representation in the somatosensory cortex of the brain.
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Wood frog
The wood frog (Lithobates sylvaticus or Rana sylvatica) has a broad distribution over North America, extending from the Boreal forest of Canada and Alaska to the southern Appalachians, with several notable disjunct populations including lowland eastern North Carolina.
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Redirects here:
Land otter, Lontra canadensis, Lutra canadensis, Missouri River Otter, North American River Otter, North American River otter, North American otter, North American river otters, North american river otters, Northern River Otter, Northern river otter, River Ottter, Social behavior of North American river otters.
References
[1] https://en.wikipedia.org/wiki/North_American_river_otter
