Mammals and something else

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Across
  1. 2. Long-necked mammal
  2. 6. Mammal with black and white stripes
  3. 8. Feline with large mane
  4. 9. Small rodent with grayish fur
  5. 10. Reptile that has a shell
  6. 11. Man's best friend
  7. 12. The largest mammal on the planet
  8. 15. Caterpillar is born and ends winged
  9. 18. Large marsupial
Down
  1. 1. Mammal with horn on the snout
  2. 3. Mammal that eats carrots
  3. 4. Has two large humps on the back
  4. 5. Has large ears and gray skin
  5. 7. Small bird that feeds on nectar
  6. 12. Carnivore that howls and hunts in herds
  7. 13. Ostrich-like australian running bird
  8. 14. It is believed that this bird brings babies
  9. 15. Flying mammal
  10. 16. Likes to chase mice
  11. 17. Two-horned mammal with edible meat and milk