Dog: Impossible S01 E02 Don't Fear the Collar

Matt Beisner helps two dogs with wild backgrounds - Agedashi, a previously feral blue heeler with violent reactions to strangers, and Lou, a neighborhood street dog with an extreme reactivity to collars. With animal services cracking down on feral dogs, Beisner must find a way to break through Lou's fear of collars before he gets captured and put down.