Realizing that Brian may be getting old, Peter gets a newer, happier dog who the Griffins love, prompting Brian to leave. But things go awry when the "new Brian" crosses the line and humps Stewie's favorite toy.

Starring:

Alex Borstein, Danny Smith, John Viener, Lori Alan, Mike Henry, Mila Kunis, Patrick Warburton, Seth Green, Seth MacFarlane

Genre:

Animation, Comedy