Across
1
Eight-armed sea creature
5
Large North American buffalo
6
Amphibian that leaps and croaks
8
Flightless bird that swims in cold regions
9
Crustacean with pincers
10
Egg-laying mammal with a duck bill
11
Large reptile found near rivers
Down
2
Intelligent marine mammal
3
Predatory fish with sharp teeth
4
Australian marsupial that hops
7
Clawed sea crustacean