PaSupata Toga - Verse 34-35

They are : Birth as human beings; as domestic animals (Pasu) ; from the state of Pa§u (he becomes ) a wild l animal ; from that stage (he goes to) the birds ; from ‘bird-hood* to reptiles; from reptilehood he certainly becomes an immobile. He who has attained the immobile state evolves into a human being. He thus rotates like one propelled by the potter’s wheel.