It’s not twerking. It’s not salsa or breaking. You might put it somewhere between vogueing and the robot. Whatever you want to call it, the distinctive performance style of a female gibbon is a danceslotsplus, researchers say. Kai Caspar, a zoologis

In the 1960s, Jane Goodall started spending weeks at a time in Gombe Stream National Park in Tanzania watching chimpanzees. One of her most important discoveries was that the apes regularly made gestures to one another. Male chimpanzees tipped their