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Across 2. an animal that hunts other animals for food 6. a behavior that is done automatically 7. breathe with lungs and have dry, thick skin covered with scales 9. different 12. a characteristic that enables a living thing to survive in its environment 13. to copy 15. vertebrates who young drink milk from their mother 16. vertebrates that have both feathers and wings 17. product of two distinct breeds

Down 1. when an animal is on something colored very similar to its natural color 3. living things that have parents that are quite different from each other 4. manner of behaving or acting 5. animals that can live on land and in water 8. passing of inherited traits from parents to offspring 10. a particular organism 11. blending in with the environment 14. vertebrates that live their whole life in water