Although the human brain is three times bigger than the brain of the chimpanzee, they both are the most similar in terms of their appearance, intellect, and emotionality. The genome of the chimpanzee and human has also many similarities.
These apes can make tools (sticks which they “entrap” termites in their mounds with) and spear-like items that they use during hunting.
Obtaining food requires close cooperation and influence on other group members, thus, chimpanzees can deceive and manipulate, they can also use symbols correctly and understand basic human verbal messages. Thus, they can plan to some extent.