Sharks have electroreceptors (ampullae of Lorenzini) that can detect the electric field of a beating heart.

Some marine mammals communicate through clicks and whistles.

Fact #525 · Animals

Some insects have lifespans of only a few hours as adults.

Fact #411 · Animals

Some birds can fly at high altitudes over mountains.

Fact #323 · Animals

Certain frogs are poisonous to predators.

Fact #418 · Animals

Some crabs can live both on land and in water.

Fact #473 · Animals

Octopuses can solve simple puzzles and open jars.

Fact #31 · Animals

Some species of octopus can change both color and texture.

Fact #343 · Animals

A moose has long legs adapted for walking in snow.

Fact #518 · Animals