Mammals
Birds
Reptiles and Amphibians
Fish
Insects
100

The sea mammal is this.

The blue whale.

100

All birds lay this.

Eggs.

100

Snakes use their tongue to do this.

To smell.

100

Fish use these to be able to breathe.

Gills.

100

Insects have this many legs.

6.

200

The fastest land mammal is this.

The cheetah.

200

The claws of a bird of prey is called this.

Talons.

200

When a frog is brightly colored, it means this.

They are poisonous.

200

A fish's skin is covered in this.

Scales.

200

The largest, common bee is this.

The bumblebee.

300

The only egg-laying mammal.

The duck-billed platypus.

300

The yellow part of a bird egg.

The yolk.

300

Turtles use this to defend themselves.

Their shell.

300

This kind of fish is famous for going between salt water and fresh water.

Salmon.

300

Butterflies and moths begin their life as this before they go into metamorphosis, or change their form.

Caterpillars.

400

This sea mammal is also known as a "sea cow".

The manatee.

400

The smallest bird in the world is this.

The hummingbird.

400

The name a baby frog goes by before it goes into metamorphosis, or changes into a frog. 

A tadpole.
400

This fish can smell the blood of prey for miles.

Sharks.

400

Insects have a hard body covering called this to protect themselves.

Exoskeletons.

500

Name a feature only known to mammals.

Having hair and producing milk.

500

This bird is the symbol of the United States.

The bald eagle.

500

When a lizard loses its tail, this occurs.

It regenerates, or grows a new tail.

500

This fish in known for carrying eggs on its body.

Seahorses or pipefish.

500

This is the most organized insect.

The ant.

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