Penguins have a layer of blubber beneath their feathers for insulation.

Dolphins use echolocation to navigate and hunt underwater.

Fact #12 · Animals

Some marine mammals communicate through clicks and whistles.

Fact #525 · Animals

A red kangaroo is the largest marsupial.

Fact #480 · Animals

Some species of sharks must keep moving to breathe.

Fact #284 · Animals

A blue-ringed octopus carries venom potent enough to affect humans.

Fact #370 · Animals

Some species of birds form lifelong pair bonds.

Fact #537 · Animals

Some frogs carry their tadpoles on their backs.

Fact #354 · Animals

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

Fact #19 · Animals