This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Chimaera (Greek)
The Chimera, Chimaera, or Chimæra was a monstrous fire-breathing hybrid creature from Lycia, Asia Minor, composed of different animal parts. It is usually depicted as a lion, with the head of a goat protruding from its back, and a tail that might end with a snake's head. It was an offspring of Typhon and Echidna and a sibling of monsters like Cerberus and the Lernaean Hydra.
Homer described the Chimera in the Iliad, saying that "she was of divine stock not of men, in the fore part a lion, in the hinder a serpent, and in the midst a goat, breathing forth in terrible wise the might of blazing fire." Hesiod and Apollo Dorus gave similar descriptions: a three-headed creature with a lion in front, a fire-breathing goat in the middle, and a serpent in the rear.