Werewolf (with razor-sharp dance moves) | The Ghost and Molly McGee

From S2 E17 "The Many Lives of Scratch".

Appears in Libby's story segment about Scratch's death, starting with a Jack and the Beanstalk-like story, followed by a trio of hungry werewolves with 'razor-sharp dance moves', and ending with Scratch being eaten by said werewolves, and was never heard from again.