Gone animal!

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Across
  1. 5. largest land carnivore
  2. 9. their descendants are the biggest on any land today
  3. 11. a gathering of these would be a crash
  4. 14. many makes a string but they are not pearls
  5. 15. largest waterfowl
  6. 17. having a fork in it empowers you to orientate your sense of smell
  7. 19. bird of prey
  8. 20. at 11.916 ft it has the greatest wingspan of any living bird species
  9. 22. apex predator of the Amazon
  10. 24. born from an egg but lives in a shell
  11. 25. a spine held together by muscles rather than ligaments enhances their agility
  12. 26. pre-metamorphosis amphibian
  13. 29. its food source provides its name
  14. 30. bees take the credit but these pollinate too
Down
  1. 1. canine from Africa and Asia
  2. 2. can't swim or float but loves being in the water
  3. 3. its hollow bones keep its weight to a minimum
  4. 4. most feared jungle arachnoid
  5. 6. where would you put a shoe?
  6. 7. aquatic respiratory organ
  7. 8. animals that main diet consists of leaves
  8. 10. venomous serpent
  9. 12. I witnessed a murder
  10. 13. shocking fish
  11. 16. arboreal primate
  12. 18. carnivores fresh water fish that can rapidly change colour
  13. 21. old testament plague insect
  14. 23. in South America they grow up to 6 inches long
  15. 24. deadly nail
  16. 27. padded feet of some carnivores
  17. 28. Donald Duck gets the bill, Tweetie the canary gets the ____