A dog dressed on overalls walks to the front of a house holding a lucky horseshoe. He proceeds tp uses a nail to hammer the horseshoe to the front door and the whole house shakes as he bangs away. A wider shot shows that only the door is still standing. The rest of the house has collapsed.
A dog is painting a house but instead of paint, he dips his brush on a can labeled window. He proceeds to paint windows on the outside of the house. HE goes to another can labeled door and dips the brush in. He then paints on a door, completing the house.
A dog is working furiously away, placing the final touches on a house that he built. He is sawing an extra piece of wood from the roof, he then climbs up the side of the house and saws the seemingly last piece of wood to complete the project. Instead of completing the job, the house unexpectedly collapses.