Over the course of their lives, these birds grow long, white spines of cartilage in the middle of their foreheads. Some birds possess horns approaching six inches in length. No other birds on ...

The difference in lip shape is related to the animals' diets ... and Singapore. The horn is also valued in North Africa and the Middle East as an ornamental dagger handle. The white rhino once ...

Known as the Siberian unicorn, the animal had a long horn on its nose, and roamed the grasslands of Eurasia. New evidence shows the hefty beast may have eventually died out because it was such a ...