Crows in Japan drop nuts on crosswalk lines and wait for cars to crack them at red lights.

Certain frogs can glide from tree to tree.

Fact #394 · Animals

Octopuses can solve simple puzzles and open jars.

Fact #31 · Animals

Blue whales can grow longer than 90 feet.

Fact #341 · Animals

A blue whale's heart can weigh over 400 pounds.

Fact #104 · Animals

Some birds sing complex songs to mark territory.

Fact #517 · Animals

Ravens can solve complex problems in experiments.

Fact #380 · Animals

Certain birds can recognize themselves in mirrors.

Fact #404 · Animals

Some species of ants can form bridges using their bodies.

Fact #420 · Animals