Peeing Is Contagious among Chimps Just as people often yawn or scratch themselves when they see someone else do so, for chimpanzees, peeing is contagious By Meghan Bartels edited by Sarah Lewin Frasier Chimpanzee (Pan troglodytes) urinating in tree, Nyungwe National Park, Rwanda, Africa. Join Our Community of Science Lovers! Some primates pee together. Ena…