The animal known for its intelligence and ability to use tools is the chimpanzee. Chimpanzees, our closest living relatives, exhibit remarkable cognitive abilities, including problem-solving skills and social intelligence. They have been observed using sticks to extract termites from mounds, fashioning leaves into sponges to soak up water, and utilizing stones to crack nuts. These behaviors demonstrate their capability to devise and use tools, a trait once thought to be unique to humans. In addition to their tool use, chimpanzees can communicate through vocalizations, gestures, and facial expressions, showcasing their complex social structures and emotional depth.