Temporal range: Middle Pleistocene–Recent
Rhyhorn (Diceros c. cataphracto meaning "armored rhinoceros") is a species in the genus Diceros. It is a sturdy and strong bodied Pokemon that is protected by its thick skin which resembles plated armor.
Rhyhorn are small grey rhinoceros Pokemon that are stocky in appearance and covered by its thick skin. It possesses a flat forehead of shield like proportions with a singular large horn protruding in front of its face. Ears can be found on the side of its head. Rhyhorn have thick hoofed feet with two sharp nails on each foot. 
Rhyhorns are often found in herds of just Rhyhorns with leaders typically being experienced or aged Rhyhorns. Rhydons and Rhyperior typically are solitary and are often isolated from their smaller relatives as a result of their aggressive behavior.
Young Rhyhorn often play with each other by attacking each other headfirst to strengthen their armored heads. Compared to their relatives, Rhyhorn are considered social Pokemon; however, they are known for charging wildly at unwelcome visitors on their territory and even attacking in other instances.
Young Rhyhorn calves are sometimes preyed upon by Luxray, Mandibuzz, Liepard, and Feraligatr.
- ↑ [http:http://bulbapedia.bulbagarden.net/wiki/Rhyhorn_(Pok%C3%A9mon) Bulbapedia: Rhyhorn]