横向
1
Large tropical lizard
5
Egg-laying mammal with a duck bill
7
Australian burrowing marsupial
8
Primate closest to humans
9
Intelligent marine mammal
纵向
2
Largest mammal in the ocean
3
Dog-like scavenger of Africa
4
Slow-moving reptile with hard shell
5
Flightless bird that swims in cold regions
6
Slow-moving mollusk without a shell
7
Wild dog that hunts in packs