The animal renowned for its intelligence and problem-solving abilities is the octopus. Octopuses exhibit remarkable cognitive skills, with the capacity to navigate complex environments, use tools, and communicate through color changes and texture. Studies have shown that they can learn from experience and even escape from enclosures, demonstrating a high degree of adaptability. Their large, complex brains, coupled with their unique nervous system, make them one of the most intelligent invertebrates. Their behaviors challenge our understanding of animal intelligence, suggesting that problem-solving may not be exclusive to mammals or traditional higher-order species.