The type of animal known for its intelligence and problem-solving abilities is the dolphin. Dolphins are highly social marine mammals belonging to the cetacean family, which also includes whales and porpoises. They are known for their sophisticated communication skills, social structures, and ability to learn complex tasks quickly. Dolphins exhibit behaviors indicating self-awareness, such as recognizing themselves in mirrors. Their problem-solving abilities have been observed in various situations, including using tools and collaborating with others to catch prey. These traits have led to extensive study of dolphins, emphasizing their cognitive capabilities and emotional depth.