Horn Size

As you can see from these photos the horn size on black rhinos (and other rhinos) can differ dramatically in size. The horns are made of compressed keratin fibres, the same material that is found in fingernails and hair. The larger front horn is typically about 50 cm long (20 inches), but can sometimes be over a metre long.

The second horn on the rhino mother photographed below is also a tremendous size, and unusual shape. Her calf is also showing great horn growth for its age.