This incredible photo marks the end of Matador Torero Alvaro Munera's career. Hecollapsed in remorse mid-fight when he realized he was having to prompt this otherwise gentle beast to fight. He went on to become an avid opponent of bullfights.
Rhinoceros horns unlike those of other horned mammals (which have a bony core) only consist of keratin. Keratin is also the key structural material making up the outer layer of human skin. It is the key structural component of hair and nails.