Wyvern

A wyvern is a huge flying lizard with a poisonous stinger in its tail. While only a distant cousin of true dragons, wyverns' tendency to hunt in packs makes them dangerous foes. A wyvern’s body is 15 feet long, and dark brown to gray; half that length is tail. Its wingspan is about 20 feet.

Vox Machina encounters several wyverns being ridden by bandits in "Skyward". In a humorous turn of events, one of the flying beasts is polymorphed into a harmless rabbit, and consequently plummets thousands of feet into the Ozmit Sea below.