This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Ceryneian Hind (Greek)
The Ceryneian hind, was a creature that lived in Ceryneia, Greece and took the form of an enormous female deer, larger than a bull, with golden antlers like a stag, hooves of bronze or brass, and a "dappled hide", that "excelled in swiftness of foot", and snorted fire. To bring it back alive to Eurystheus in Mycenae was the third labour of Heracles.
Other names and descriptions for it were: doe with the golden horns, golden-horned hind, Ceryneia hind, Cerynitian hind, beast with golden antlers, Parrhasian hind, nimble hind of Maenalus and beast of Maenalus. Frazer says that the hind took its name from the river Cerynites, "which rises in Arcadia and flows through Achaia into the sea".