In biology, altricial species are those in which the young are incapable of moving around on their own soon after hatching or being born.
Aristotle (Ἀριστοτέλης Aristotélēs,; 384–322 BC) was an ancient Greek philosopher and scientist born in the city of Stagira, Chalkidiki, in the north of Classical Greece.
Aristotle's biology is the theory of biology, grounded in systematic observation and collection of data, mainly zoological, embodied in Aristotle's books on the science.
Gestation is the carrying of an embryo or fetus inside viviparous animals.
History of Animals (Τῶν περὶ τὰ ζῷα ἱστοριῶν, Ton peri ta zoia historion, "Inquiries on Animals"; Historia Animālium "History of Animals") is one of the major texts on biology by the ancient Greek philosopher Aristotle, who had studied at Plato's Academy in Athens.
The Kitāb al-Hayawān (كتاب الحيوان; English: Book of Animals) is an Arabic translation in 19 treatises (maqālāt) of the following zoological texts by Aristotle: Historia Animalium: treatises 1-10 De Partibus Animalium: treatises 11-14 De Generatione Animalium: treatises 15-19 While the book is often attributed to Yahyà bin al-Bitrīq, the translator is unknown.
Movement of Animals (or On the Motion of Animals; Greek Περὶ ζῴων κινήσεως; Latin De Motu Animalium) is one of Aristotle's major texts on biology.
Parts of Animals (or On the Parts of Animals; Greek Περὶ ζῴων μορίων; Latin De Partibus Animalium) is one of Aristotle's major texts on biology.
In biology, precocial species are those in which the young are relatively mature and mobile from the moment of birth or hatching.
Reproduction (or procreation or breeding) is the biological process by which new individual organisms – "offspring" – are produced from their "parents".
Teratology is the study of abnormalities of physiological development.