Animal Classification

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Across
  1. 3. insects are ___________ (no backbones)
  2. 5. a cold-blooded animal with s____, moist skin is an amphibian
  3. 8. all vertebrates have ________
  4. 10. a grasshopper is an invertebrate because it has NO _______
  5. 11. a snake and a frog are classified as _____ and amphibians
  6. 12. scientists observe an animal with hair and wings, what is this animal
  7. 13. some, but not all, invertebrates have (backbones, shells, feathers)
Down
  1. 1. animals without backbones are called __________________
  2. 2. vertebrates that are distinguished by live birth, presence of hair or fur, and produce milk for their babies
  3. 4. which animals are cold-blooded, live part of their lives in water and part on land
  4. 5. the skin of a reptile is covered with ______
  5. 6. a rabbit is a __________
  6. 7. a lizard is a ____________
  7. 9. amphibians and ________ have a backbone and lays eggs