1. Type of poisonous snake found in the midwest, named for the color of its head - copperhead
2. Reptiles have ____ loop circulation - double
3. Order that includes lizards and snakes - squamata
7. Snake that has heat sensing abilities; pit _viper
8. Type of crocodilian that lives mainly in North and South America (found in freshwater) - alligator
9. Class that includes turtles, lizards, snakes and crocodiles - reptilia
10. A shelled reptile that lives mainly on the land and is very slow moving - tortoise
13. The type of egg reptiles have - amniote
14. This reptile has a shell and tends to live in the water - turtle
15. Type of lizard that has a sticky tongue to catch prey, some can even change colors - chameleon


2. Group of large reptiles that became extinct - dinosaurs
4. A type of turtle that is found in salt water - terrapin
5. Reptiles convert waste (ammonia) into _uric_ acid
6. Lizards that produce venom; ___ monster - gila
11. Type of constricting snake that can become very large - python
12. Rare type of reptile that has a "third eye" - tuatara
16. An animal that lays eggs that develop outside the mother's body (like a sea turtle) - oviparous
17. The part of the egg that provides food for the embryo - yolk
18. Describes and animal whose body temperature changes with its surroundings (cold-blooded) - ectothermic
19. Organ used by reptiles to get oxygen - lung