The Scape Goat (originally on BBC Red Button & bbc.co.uk/cbbc)
Daily Motion; IMDb; Wikia

Set between seasons 1 and 2 of Wolfblood. At the end of the first season, Rhydian went to live in the wild with his mother and his younger brother Bryn, and their pack. The leader of the pack is Alric, whose daughter, Jana, takes an interest in the human world. In this webisode, she convinces Rhydian to show it to her. That leads to Rhydian being punished. But his mother Ceri breaks the rules to release him from his punishment, and tells him to run. This sets the stage for season two of the show.