The animal known for its intelligence and ability to use tools is the chimpanzee. Closely related to humans, chimpanzees display remarkable cognitive abilities and problem-solving skills. They have been observed using sticks to extract termites from mounds, employing leaves as sponges to soak up water, and even cracking nuts with stones. Their intelligence extends to social behaviors, as they form complex relationships and communicate through gestures and vocalizations. Studies have shown that chimpanzees can learn and apply knowledge in novel situations, demonstrating a level of abstract thinking and adaptability that highlights their advanced cognitive processes.