Vertebrates

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Across
  1. 2. animal that eats only animals
  2. 5. active at night
  3. 6. animal that eats only insects
  4. 7. type of mammal with a pouch for developing young
  5. 10. animal that eats only plants
  6. 13. process in which animals use sound to locate objects
  7. 14. plates in a whale's mouth used to filter krill from the water
  8. 15. seals and walruses
Down
  1. 1. what birds have that no other animal has
  2. 2. alligators and crocodiles
  3. 3. animal that eat both plants and animals
  4. 4. used by birds and mammals to breathe
  5. 8. the largest primates
  6. 9. type of mammal that lay eggs
  7. 11. type of animal with scales that lays eggs on land
  8. 12. type of mammal with teeth that keep growing