Hydra
Hydras are a type of Dragonkin with multiple heads. Moreso than any other dragonkin, hydras vary heavily in both physical build, abilities, as well as temperament and intelligence. They are said to be able to produce offspring with any kind of dragonkin.
Basic Information
Anatomy
By definition, hydras have at least two heads capable of operating independently. Other than this, their anatomy varies heavily - some are quadrupedal, and others serpentine. The number of heads can vary, with some hydras even capable of quickly regrowing heads if they are removed.
Genetic Ancestor(s)