Continuity mistake: After Lois hits the dog, she exits her car and runs to the dog. As she passes the back of the car, her tail lights are off. When she reaches the dog, her tail lights are on.
Continuity mistake: Clark goes to see Lex about the dog. Lex, who was about to start a game of pool, breaks a fresh rack. Lex then goes to make his second shot from near the side pocket and as he does you can see there are two striped balls near the rail close to Lex's cue stick. Just after he takes his shot those balls are gone even though those balls had not been hit.
Continuity mistake: After Krypto comes around the fence we hear one of the two guys say "You got all the bags out of the truck, right?". The camera then pans over to the van and you can see, under the rear of the van, two gas containers. There is a metal one on the left and a plastic one on the right. Krypto starts to run for the truck and we see the containers again only now the metal one is on the right and the plastic one is on the left.
Continuity mistake: While talking about what to name the dog there are several shots of the dog and the metal chain is gone. Then, right at the end of the scene, as the dog puts his paw over his nose, the chain is back.
Continuity mistake: When checking out the armored car robbery, Clark tells Lois to turn left. We then go to on out of car shot where the big red letters of the GMC that Lois is driving are visible. When the 4x4 skids to halt shot its GMC logo is covered in black tape.
Continuity mistake: Before Clark throws the two bad guys against the side of the barn there is no snow falling at this point. When the shot switches to Krypto saving Hercules you can see that now it is snowing rather heavily. This is far too fast to happen naturally.
