Urination, like sneezing, is 'contagious' in primates, including humans - Earth.com
- Urination, like sneezing, is 'contagious' in primates, including humans Earth.com
- Do Chimps Who Urinate Together Stay Together? The New York Times
- For Chimpanzees, Peeing May Be Contagious—Just Like Yawning Is for Humans, Study Finds Smithsonian Magazine
- Peeing Is Contagious among Chimps Scientific American