What is the name of a two-legged dragon-like creature?

A wyvern is a biped legendary creature with a dragon's head and wings, a reptilian body, two legs, and a tail often ending in a diamond- or arrow-shaped tip. The wyvern in its various forms is important to heraldry, frequently appearing as a mascot of schools and athletic teams. It is a popular creature in European and British literature, video games, and modern fantasy.