Dogs can learn complex commands and sequences.

Certain insects can enter a dormant state called diapause.

Fact #399 · Animals

Some species of frogs can survive being partially dehydrated.

Fact #444 · Animals

Blue whales are the largest animals known to have ever lived.

Fact #246 · Animals

Some sharks can sense a drop of blood from far away.

Fact #348 · Animals

A crocodile’s teeth are replaced throughout its lifetime.

Fact #532 · Animals

Some sharks can reproduce without a mate in rare cases.

Fact #544 · Animals

A porcupine raises quills as a defense mechanism.

Fact #524 · Animals

Some birds can mimic human speech.

Fact #268 · Animals