Aristotle was unsure whether or not sponges were animals, which in his system must have sensation, hunger, and locomotion, or vegetation, which didn't: he understood that sponges could perception contact and would contract if about to be pulled off their rocks, but which they had been rooted like plants and https://caidenspjfy.wikihearsay.com/3602316/5_simple_techniques_for_animal_sex