- After we climbed out the window, Vera went behind a bush to take a tinkle, I tried to follow her, but she pushed me back and then giggled a little.2010, Edward H’ Wolf, “The Light inside the Darkness” (chapter 12), in Secluded Mansion Nights, Trafford Publishing, →ISBN, page 101:
- "Now, new research suggests urination may function in a similar way: Captive chimpanzees that saw their peers peeing were more likely to take a tinkle themselves."2025 January 21, Sarah Kuta, “For Chimpanzees, Peeing May Be Contagious—Just Like Yawning Is for Humans, Study Finds”, in Smithsonian Magazine: