Mammals

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Across
  1. 3. Covering found on all mammals
  2. 4. Musclethat helps with breathing
  3. 6. Animals that regulate internal temperature
  4. 7. Animals that eat both plants and meat
  5. 9. Animals that eat insects
  6. 12. Type of mammals with pouches
  7. 15. Sharp teeth used for stabbing
  8. 17. Group of egg-laying mammals
  9. 18. Egg-laying mammals (another term)
  10. 19. Organ that pumps blood through the body
  11. 20. Teeth used for grinding food
Down
  1. 1. Animals that give birth to live young
  2. 2. Organ that nourishes unborn young
  3. 5. Type of circulation involving lungs
  4. 8. Organ system used for breathing
  5. 10. Fluid mothers produce for offspring
  6. 11. Warm-blooded animals that maintain body temperature
  7. 13. Air sacs in lungs for gas exchange
  8. 14. Teeth used for cutting and biting
  9. 16. Protein that makes up mammal hair