Across
1
Fish that swims upstream to spawn
4
Tallest living animal on Earth
5
Slow-moving reptile with hard shell
9
Australian burrowing marsupial
11
Small horse-shaped sea fish
Down
2
Amphibian that leaps and croaks
3
Clawed sea crustacean
4
Largest living primate
6
Intelligent marine mammal
7
Wild dog-like animal of North America
8
Insect with colorful wings
10
Animal that builds dams
12
Elegant white water bird