Colloquially known as the “swamp stallion”, this aberration of nature boasts the nastier sides of both parent breeds (horse and hydra), with none of their redeeming qualities*. Despite this fact, however, hunting it is expressly forbidden in most countries. (Though most cryptozoologists agree that this is for the sake of each country’s citizen-count rather than a protective measure for the beast itself.)

*Granted, the hydra of legend had no redeeming qualities and seemed possessed of only a single large nasty side in the first place, but the statement is still technically correct.