Animal Classification

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Across
  1. 5. mostly water animals but can live on land, smooth or rough scaly skin, lay eggs and may have lungs
  2. 7. an animal without a backbone
  3. 9. vertebrates that live on land, scales cover body lay eggs, cold blooded
  4. 10. a vertebrate that lives and breathes in water and has fins
Down
  1. 1. animal with a backbone
  2. 2. animals that have hair and produce milk for their young
  3. 3. a systematic arrangement in groups
  4. 4. a small animal that has six legs and a body formed of three parts and that may have wings
  5. 6. may or may not fly, vertebrate, lay eggs, have feathers
  6. 8. organs that exchange oxygen and carbon dioxide with water