A crocodile cannot stick its tongue out. See more

Consuming chocolate was once considered a sin during the 16th and 17th century. See more

When swans go on a date, they'll put their heads together. Then they stick together for life. See more

The "sixth sick sheik's sixth sheep's sick" is said to be the toughest tongue twister in the English language. See more

On average, 100 people choke to death on ball-point pens every year, so don't stick it in your mouth! See more

A crocodile's tongue is attached to the roof of its mouth and he cannot move it. See more

A chameleon's tongue is twice the length of its body. See more

Like fingerprints, everyone's tongue print is different. See more