"The greatest philosopher of antiquity, Aristotle is of primary interest to biologists. In his literary heritage, works on natural science occupy no less significant place than philosophical ones; Aristotle's biological treatises have long been considered the best of his scientific works. Furthermore, , Three major masterpieces of Aristotelian biology “Animal History” , "On the Parts of Animals" and "On the Origin of Animals" are the creations of the most mature period of Aristotle's work. in which his departure from Platonic idealism and the tendency toward materialism were most strongly reflected. Biological treatises of the "father of zoology" Aristotle should attract the attention of biologists This edition includes a translation of Aristotle's "comparative anatomy" - "On the parts of animals", which is an essay, both chronologically and logically preceding his "general biology" - "On the origin of animals" - the main masterpiece of Aristotelian biology .. The Big Ones