Chimpanzee communication includes a mixture of passionate gestures, vocalizations and even sign language, which are all used to get their points across with each other. The gestures frequently happen in sequence so, similar to titi monkey alarm calls, come to mirror human sentence structures.
"There is tremendous overlap in human and chimpanzee gestures," Mary Lee Abshire Jensvold, associate director of the Chimpanzee and Human Communication Institute, told Discovery News. "Many gestures that you see in chimpanzee play, such as slaps, tickles, pokes, blocks and kicks, are ones that you would see in human play. Imagine play wrestling between two humans, and you've imagined a scene with two chimpanzees playing."