This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Karkadann (Persian)
Depictions of karkadann are found also in North Indian art. Like the unicorn, it can be subdued by virgins and acts ferociously toward other animals. Originally based on the Indian rhinoceros and first described in the 10th/11th century, it evolved in the works of later writers to a mythical animal "with a shadowy rhinocerine ancestor" endowed with strange qualities, such as a horn with medicinal qualities.
An early description of the karkadann comes from the 10/11th century Persian Al-Biruni, 973–1048. He describes an animal which has "the build of a buffalo. a black, scaly skin; a dewlap hanging down under the skin. It has three yellow hooves on each foot, the tail is not long. The eyes lie low, farther down the cheek than is the case with all other animals.