The animal known for its intelligence and problem-solving abilities is the dolphin, particularly the bottlenose dolphin. These marine mammals are renowned for their complex social structures, advanced communication skills, and ability to learn new tasks quickly. Dolphins exhibit behaviours such as tool use, cooperative hunting, and mimicry, which highlight their cognitive capabilities. Research has shown that dolphins can recognize themselves in mirrors and understand abstract concepts, demonstrating high levels of self-awareness and reasoning. Their playful nature and curiosity also contribute to their reputation for intelligence, making them a subject of fascination in both scientific studies and popular culture.