animal crossword

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Across
  1. 5. vertebrate
  2. 8. Bilateral Symmetry
  3. 12. budding
  4. 13. glands Mammary Glands
  5. 15. asymmetric
  6. 16. medusa
  7. 19. Placenta
  8. 21. polyp
Down
  1. 1. Ectothermic
  2. 2. molt
  3. 3. Hermaphrodite
  4. 4. exoskeleton
  5. 6. benthic
  6. 7. water vascular system
  7. 9. radical symmetry
  8. 10. invertebrate
  9. 11. Amniotic Eggs
  10. 14. Endothermic
  11. 17. endoskeleton
  12. 18. Cartilage
  13. 20. swim bladder