The animal known for its horn and often associated with unicorns is the rhinoceros. Rhinos are large, thick-skinned mammals native to Africa and South Asia, distinguished by their horn(s) made of keratin, the same protein that forms human hair and nails. While rhinoceroses are real creatures, the association with unicorns stems from the legendary idea of a single-horned horse, representing purity and grace in various cultures. Rhinos face significant threats due to poaching and habitat loss, leading to conservation efforts aimed at preserving their populations and raising awareness about their ecological importance.