横向
1
Egg-laying mammal with a duck bill
4
Elegant white water bird
5
Fish that swims upstream to spawn
6
Primate closest to humans
7
Largest mammal in the ocean
纵向
2
Burrowing mammal with poor eyesight
3
Large North American buffalo
4
Small horse-shaped sea fish
8
Crustacean with pincers
9
South American pack animal