Disney Junior has a new series of shorts it airs between shows called "Lights Camera Lexi". It's an anthology sereies where a amateur director named Lexi screens various shorts for the viewer.
One of the shorts called "New werewolf on the block" Is a fun little story about kids trick or treating and has a good message about things not always being what they seem. But, more importantly, it has a quick little scene of a girl trick-or-treater changing into a werewolf.
https://www.youtube.com/watch?v=YdDnI5Ryr6U It's fast and there's not much too it, but it's a nice character design.