Double or Mutton (1955)

Ralph Wolf is dead set on rustling some sheep, but Sam Sheepdog is equally determined to shut him down. Ralph's schemes run the gamut from burrowing underground and tightrope-walking to launching a guided missile and dressing up as Little Bo Peep. He even fires a cannon and tries a sneaky trick that gives Sam a sudden, unfortunate hair growth. No matter how wild or desperate the plan, Sam is always there to counter it, keeping the flock safe and Ralph perpetually frustrated.