Animal crackers!

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Across
  1. 2. Long, long neck
  2. 4. Green and bouncy!
  3. 6. Tap, tap, tap
  4. 8. Not a cat
  5. 9. Trade you for two bricks
  6. 11. See you later...
  7. 12. Watch out for that ball!
Down
  1. 1. Swimming tortoise (sort of)
  2. 3. In a while... snappy
  3. 5. Valuable swimmer
  4. 7. Nelly never forgets
  5. 10. Police car coloured