He classified beings by their parts, or in modern terms attributes, such as having live birth, having four legs, laying eggs, having blood, or being warm-bodied.
Dia mengklasifikasikan makhluk berdasarkan bagian mereka, atau dalam istilah modern atribut, seperti memiliki kelahiran hidup, memiliki empat kaki, bertelur, memiliki darah, atau bertubuh hangat.