Across
- 3. - the biological name for birds
- 4. - is a mammal
- 6. - lay eggs
- 9. - such as wombats
- 11. - included sharks and rays
- 12. - born with maturity
- 13. - includes animals that ave body hair
Down
- 1. - jawlesss fish
- 2. flying fox- a placental mammals
- 5. - have skeletons inside their bodies
- 7. - are boney fish
- 8. - they breathe only using their lungs
- 10. - Their lung are not very effective