Animals

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Across
  1. 7. Considered the most interesting group of animals because some can live on land and in water at the same time
  2. 8. Humans are in this animal group
  3. 9. People can do it underwater just for a short time
  4. 10. Most of the animals lay them
  5. 11. Most of the mammals are covered with it
Down
  1. 1. Humans have mouths, Birds have...
  2. 2. The name of this group means an animal that crawls or moves on its belly.
  3. 3. The fish's body is covered with it
  4. 4. Birds lay eggs in it
  5. 5. Only this group of animals can fly
  6. 6. It keeps birds warm
  7. 11. Their meat includes a high level of protein