Animal Classification Crossword Puzzle

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Across
  1. 3. are animals without backbones
  2. 5. have backbones, are cold-blooded, use gills to breathe, most lay eggs, have scales and fins, live in water
  3. 7. copy the looks of something else (for example--patterns)
  4. 10. very simple animals that have many pores through which water flows
  5. 11. have tube-shaped mouths to eat and drink
  6. 12. have backbones, are warm-blooded, breathe with lungs, have babies that are born live, have fur or hair, produce milk to feed their young
  7. 13. have long, tube-like bodies that are divided into segments
  8. 15. emits a bad smell to protect itself from predators
  9. 18. have backbones, are cold-blooded, use gills to breath in early stages of life, breathe on land with lungs as adults, go through metamorphosis
  10. 19. have jointed legs, have a hard outer covering called an exoskeleton, and have segmented bodies
  11. 21. can blend in with their surroundings (for example--skin color)
Down
  1. 1. have backbones, are warm-blooded, breathe with lungs, lay eggs, have feathers, a beak, two wings, and two feet
  2. 2. has tentacles to grab and hold its food
  3. 4. have arms that extend from the middle of the body
  4. 6. are animals with backbones
  5. 8. have soft bodies and most have thick muscular foot for movement or to open and close their shells
  6. 9. have backbones, are cold-blooded, breathe with lungs, most lay eggs, have plates or scales
  7. 14. cold-blooded, do NOT maintain a constant body temperature
  8. 16. warm-blooded, maintain a nearly constant internal body temperature
  9. 17. a porcupine has these to make a painful attack on a predator
  10. 20. a cat has these to make a painful attack on a predator