Some species of jellyfish are biologically immortal under certain conditions.

Some spiders can glide through the air using silk.

Fact #369 · Animals

Some species of frogs can survive being partially dehydrated.

Fact #444 · Animals

Some species of ants wage organized territorial battles.

Fact #401 · Animals

Some sharks can reproduce without a mate in rare cases.

Fact #544 · Animals

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

Fact #443 · Animals

A kingfisher dives into water to catch fish.

Fact #573 · Animals

Some mammals hibernate during winter.

Fact #303 · Animals

A crocodile’s teeth are replaced throughout its lifetime.

Fact #532 · Animals