Among the many standout features found in the animal world, horns rank as some of the most multifunctional and fascinating. A variety of mammals—from deer and rhinos to antelopes, buffalo, goats ...

Rhinos aren't the only animals adorned with impressive horns. 1 of 22. The upper eyelids and snout of the Malaysian horned leaf frog protrude sharply from its head, creating the illusion of horns.