He's Your Dog, Charlie Brown (1968)
When the gang loses patience with Snoopy's mischief, he suddenly finds himself back in obedience training. With a vengeance, Snoopy decides it's time to run away to Peppermint Patty's house, but soon realizes life might not be so bad with Charlie Brown after all.
Directed by Bill Melendez
Written by Charles M. Schulz