This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Hadhayosh (Persian)
The Hadhayosh is a land creature from ancient Persian mythology said to have been created by a meticulous god of the forge. Legend has it that the bodies of these creatures possess the uncanny ability to grant eternal life, the divine right to rule, and above all, the attention of the Gods.
The Hadhayosh resembles a gigantic ox with a skin made of polished brass and a mane of pure flames. Six huge solid brass horns sprout from the creatures' head with one pair at the sides like that of a common ox while the other two pairs curve frontwards like that of some accursed demon. Each Hadhayosh is said to be exactly 52 feet tall and weighing approximately 57 tonnes.