Dolphins are carnivorous mammals that live in water and have flippers instead of legs, while pigs and cows are different types of herbivorous farm animals - pigs eat plants and some meat and have four legs, while cows only eat plants and also have four legs.

3. oviparousviviparous

4. Dolphins are carnivores
Pigs are omnivores
Cows are
herbivores

6. lungs

7. four legs

8. flippers

9. wings

10. wings