The horn of a rhinoceros is made up primarily of keratin, which is the same material that makes up human hair and nails, as well as the hooves, horns, and claws of other animals. Keratin is a tough, fibrous protein that provides structural support and protection. In rhinoceroses, the horn is a highly prized commodity in some cultures, leading to illegal poaching and trade, which has contributed to the decline of some rhinoceros species.
 The horn of a rhinoceros is predominantly composed of keratin, a tough and fibrous protein. Keratin is the same substance found in human hair and nails, as well as in the hooves, horns, and claws of various animals. Its role is to offer structural support and protection.
Unfortunately, the horns of rhinoceroses are highly coveted in certain cultures, resulting in illegal poaching and trade. This illicit activity has played a significant role in the decline of some rhinoceros species, highlighting the urgent need for conservation efforts to protect these magnificent creatures.