Researches find poop-throwing by chimps is a sign of intelligence

https://phys.org/news/2011-11-poop-throwing-chimps-intelligence.html

Poop-Flinging Monkey Hits Grandma Right in the Face at the Zoo

https://www.thrillist.com/news/nation/monkey-hits-grandma-in-the-face-with-poop-at-michigan-zoo