Male seahorses carry and give birth to their young.

Some marine animals use bioluminescence to produce light.

Fact #208 · Animals

Some birds sing complex songs to mark territory.

Fact #517 · Animals

A crocodile can replace its teeth multiple times in its life.

Fact #406 · Animals

Some lizards can regrow their tails.

Fact #71 · Animals

Some sharks can reproduce without a mate in rare cases.

Fact #544 · Animals

Certain frogs use bright colors to warn predators.

Fact #438 · Animals

A blue whale's tongue can weigh as much as an elephant.

Fact #443 · Animals

A crocodile’s teeth are replaced throughout its lifetime.

Fact #532 · Animals