1. Chimpanzees
Chimpanzees exhibit remarkable tool use, showcasing their problem-solving abilities and cultural diversity. They craft sticks to fish for termites, use stones to crack nuts, and even fashion spears for hunting. (en.wikipedia.org) Their sophisticated tool use mirrors early human behaviors and has been widely documented. Ongoing studies highlight their cultural variability in techniques and traditions, reinforcing their close cognitive kinship to humans. (cmnh.org)