Mammals

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Across
  1. 2. an animal that have a constant body temperature
  2. 3. teeth with two points behind the canines used to shear and shred food.
  3. 5. an animal that produces their own heat
  4. 7. Large brained mammal
  5. 11. an animal that gives birth to live young but the period of development within the mother is short.
  6. 13. protein that mammalian hair is made of.
  7. 16. The time during which placental mammals develop inside the uterus is.
  8. 18. front teeth, used for biting and cutting
  9. 20. a mammal with a pouch
  10. 22. a relationship between two organisms in which at least one of the organism’s benefits.
  11. 24. the bottom chambers in a mammalian heart.
Down
  1. 1. teeth along the check used for grinding and crushing
  2. 4. an animal that eats plants and animals.
  3. 6. an air sac in the lungs that are surrounded by capillaries.
  4. 8. a mammal that lays eggs
  5. 9. Golden Age of Mammals
  6. 10. the sum of all chemical reactions in the body.
  7. 12. a vessel that transports blood to the heart.
  8. 14. a vessel that transports blood away from the heart.
  9. 15. the position of an organism in the food chain
  10. 17. the upper chambers in a mammalian heart.
  11. 19. Large predator of the animal kingdom
  12. 21. an animal that eats animals only.
  13. 23. an animal that eats plants only.