I was trying not to put a reptile in this, but I couldn't think of anything for 16, so I ended up putting a snake dude there... o.0

EDIT:
I should have done this, but I didn't think about it... 8(

1 - Horse
2 - Lion
3 - Bulldog
4 - Hog
5 - Duck
6 - Elephant
7 - Walrus
8 - Bear
9 - Tiger
10- Flamingo
11- Giraffe
12- Hippo
13- Armadillo
14- Bat
15- Killer Whale
16- Snake