* Problem-solving: Chimpanzees and orangutans are known for their tool use and problem-solving abilities.
* Social intelligence: Dolphins and elephants are incredibly social creatures with complex communication systems and intricate social structures.
* Memory: Crows and ravens have exceptional memory and can recognize individuals after years.
* Learning: Dogs and parrots are highly trainable and can learn new tricks and vocabulary.
Therefore, it's more accurate to say that different animals have different strengths and weaknesses when it comes to intelligence.
Instead of ranking animals, it's more fascinating to appreciate the diverse ways in which different species demonstrate intelligence and problem-solving abilities.