2) 1. parrot; 2. crocodile; 3. whale; 4. butterfly; 5. seal; 6. spider;
3) fly: butterfly, falcon, owl
swim: crocodile, human, shark, seal, whale, bear
2 legs: falcon, human, owl, parrot
4 legs: elephant, crocodile, bear
4) 1. A crocodile doesn't fly. It has 4 legs.
2. A shark doesn't fly. It swims.
3. A bear doesn't fly. It has 4 legs.
4. A seal doesn't fly. It has no legs.
5. A falcon doesn't swim. It has 2 legs.
6. An owl doesn't swim. It flies.