2. orangutans

3. chimpanzees

4. Baboons (7 subspecies, including black-faced baboons and big baboons)

5. Gibbon (7 subspecies)

6. Monkeys (many subspecies, especially monkeys and black apes)

7. Fine toothed whales (several subspecies, especially "killer whales")

8. Dolphin (about 80 subspecies)

9. Elephants (2 subspecies)

pig

Ha ha! Pigs that look stupid at ordinary times rank 10, which is smarter than cats and dogs. Can you believe it?