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Across 1. mammals are ___ blooded 5. phylum mammals are in 6. there are ___ types of mammals 7. mammals have fur or ___ 10. ___ are the oddest 13. fur and hair provide___ 14. ___ grind food 16. young mammals are fed by the mother's ___ 17. are the mammals you think of (whales, humans) 18. some mammals have ___ types of teeth 19. some mammals such as hippoes and whales have

Down 2. young are born ___ 3. the ___produces air 4. mammals are the ___ chordate to evoulve 5. ___ are sharply pointed teeth 8. young live in a pouch 9. chordates are ___ 11. ___ are flat-edged teeth 12. milk is produced by these glands 15. mammals have a layer of ___ beneath their skin