Across
1
Eight-armed sea creature
4
Intelligent marine mammal
5
Slow-moving reptile with hard shell
7
Egg-laying mammal with a duck bill
8
Striped big cat from Asia
9
Insect with colorful wings
Down
2
Crustacean with pincers
3
Fish that swims upstream to spawn
6
Graceful animal with antlers
7
Colorful bird that can mimic speech
10
Tallest living animal on Earth