The blue whale's heart is the size of a small car — and beats as slowly as 2 times per minute when diving.

Some amphibians can absorb oxygen through their skin.

Fact #328 · Animals

Bees perform a waggle dance to communicate the location of food sources.

Fact #19 · Animals

A walrus uses its tusks to haul itself onto ice.

Fact #536 · Animals

Certain frogs use loud calls to attract mates.

Fact #459 · Animals

Some birds can imitate sounds from their environment.

Fact #489 · Animals

Some birds migrate thousands of miles each year.

Fact #77 · Animals

A rhinoceros has thick skin for protection.

Fact #504 · Animals

Some species of spiders can survive underwater for short periods.

Fact #414 · Animals