How this family of animals has developed such a wide variety of headgear has long stumped researchers. IE 11 is not supported. ... How did animals' dazzling horns, antlers evolve?

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.

Choose your weapon: How animals got their tusks, horns, and antlers. Location and lifestyle seem to sway whether a species evolves mouth weapons, like tusks, or head weapons, like antlers and horns.

Legalizing the Sale of Rhino Horn May Only Endanger the Animals More. 7 minute read. Manuel Romaras—Getty Images. By Aryn Baker. January 29, 2016 12:54 PM EST.

As a member of Uganda’s Bahima tribe, Olivia Byanyima carries a deep reverence for the African An­­kole cow. “Our culture revolves around this animal,” she says. But in recent years the ...