Primates:
* Chimpanzees: Known for their problem-solving skills, tool use, and social complexity.
* Bonobos: Similar to chimps in intelligence, but with a more peaceful and cooperative social structure.
* Orangutans: Highly intelligent and skilled at using tools, especially for gathering food.
* Gorillas: Despite their size, they exhibit complex communication and problem-solving skills.
Cetaceans:
* Dolphins: Known for their complex social structures, language, and problem-solving abilities.
* Orcas: Highly intelligent and skilled hunters, with complex social structures and vocalizations.
* Pilot Whales: Show strong social bonds and complex communication systems.
Other Intelligent Animals:
* Elephants: Exhibit strong memory, social intelligence, and self-awareness.
* Crows and Ravens: Known for their problem-solving skills, tool use, and ability to plan for the future.
* Octopuses: Highly intelligent and have excellent problem-solving skills, complex nervous systems, and the ability to learn.
* Dogs: Excellent at learning and understanding human behavior, with a wide range of cognitive abilities.
* Rats: Incredibly adaptable and intelligent, capable of complex problem-solving and maze navigation.
Remember:
* Intelligence is a complex concept that can be difficult to define and measure.
* Different animals excel in different areas of intelligence.
* Our understanding of animal intelligence is constantly evolving.
It's important to appreciate the unique intelligence and cognitive abilities of all animals, not just the ones we consider "cleverest."