Animals

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Across
  1. 4. The outer covering that keeps a bird warm and helps it fly.
  2. 6. The hard outer covering of fish and reptiles.
  3. 8. Body parts that help a fish to swim and balance in water.
  4. 9. The young of a frog that breathes through gills.
Down
  1. 1. Mammals, birds, and reptiles use these organs to breathe.
  2. 2. The hard, pointed mouthpart of a bird.
  3. 3. The only group of animals that have feathers.
  4. 4. Animals that have scales, fins, and breathe through gills.
  5. 5. The outer covering found only on mammals.
  6. 7. Animals that can live both on land and in water.