Porpoise urine was once prized for its medicinal properties. Samuel Pepys was known to take several ounces of 'porpiss' daily.

Mountain lions have two spleens (although only one is functional).

The African Okapi has a detachable jaw similar to a snake. It is the only mammal in the world able to swallow a beach ball without chewing.

Snails communicate by passing wind.

All goats are deaf. They 'hear' by picking up vibrations through their hooves.

The Sarajevan Myrtle tree always has an even number of leaves. If one leaf falls, another will fall immediately to keep the balance.

Ants have two sets of eyebrows.

Most species of owl can rotate their eyeballs 180 degrees and look inside their own face.