Male kangaroos attract females by showing off their biceps.

Elephant calves have baby tusks that they shed a the age of around 9 months.

The largest arthropod ever caught: a Japanese spider crab with a 12 ft arm span.

Pregnant seahorse dads.

Make way for the elephant seal!

A windmill on fire creates a pattern based on spin frequency and wind speed.

This badger buried an entire cow many times its size to save it for later.

Reading: staring at tiny symbols printed on thin slices of tree in order to hallucinate.

Polar bear attack, victim survives.

Sometimes the canopies of trees in tall forests avoid touching. This is called "crown shyness".

Drunk birds slur their songs.

Cows only have front teeth on their bottom jaw.

During their annual standardized university entrance exam testing, Uzbekistan shuts down the Internet and all text messaging in the country.

Waxy monkey leaf frogs don't hop or jump, but get around by just walking and climbing.

Eggs!

Butterflies!