Scientists have discovered evidence that the early humans fashioned stone hammers and other crude tools to assist in skinning and cutting food. Goodall found countless instances of chimpanzee tool use, which supported the theory of human evolution: that great apes might just be our closest living relatives, after all.

Through her speaking engagements and her Roots & Shoots program, Jane Goodall has inspired people around the globe. Goodall normally travels the world 300 days a year, sharing her story and inspiring future generations of environmentalists. “I helped to put that conference together,” Goodall says.

Eventually it was discovered that the Gombe chimpanzees use objects — stems, twigs, branches, leaves, and rocks — in nine different ways to accomplish tasks associated with feeding, drinking, cleaning themselves, investigating out-of-reach objects, and as weapons — flailing branches and throwing rocks as missiles.

What is the main reason for sociality among primates? group defense from predators – The primary reason for sociality is protection from predation. There is a range of predators that prey upon primates.

Quality, distribution, and availability are the three key factors that contribute to primates’ success at feeding.

Socioecological factors are thought to influence primate social organisation. For example, the main benefits of group living are hypothesised to be: Improved predator detection. Predator vigilance (or awareness) and predator defence are thought to increase with group living.