Perfect pets!

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Across
  1. 3. They are very good at singing.
  2. 6. They like eating cheese.
  3. 7. They usually live in a fishbowl.
Down
  1. 1. They have small, furry ears.
  2. 2. Likes to catch mice.
  3. 4. They love eating carrots.
  4. 5. They possess smooth, moist skins.
  5. 8. Men's best friend.