Continuity: The spot that gave Patch his name is sometimes over his right eye and sometimes over his left.

Continuity: There's a scene where Pongo yanks George down a pathway, and George leaves his hat on the bench. In the next scene, he's wearing his hat.

Continuity: Cruella throws the wine bottle into the fire. It explodes causing a big puff of smoke. The smoke clears & we see nothing in the air. In the next shot, shards of glass are flying through the air.

Continuity: Perdy has a blue collar and Pongo has a red collar. When Roger and Anita fall into the pond, Pongo is pulled in with them, Perdy does not fall in, she is holding on to Anita's torn dress. In the later scene Perdy gets out of the pond and shakes herself off, Pongo is standing there as if he never fell in.

Continuity: In some shots (when the puppies run out the door & later out of the barn & also when just running in a pack), you can see that none of the puppies have black ears, yet many do.

Continuity: While at the park, Anita's hat changes from black and beige.

Continuity: Cruella pulls up next to the truck with the dogs in it. Next to the truck, you can see a hill going up. She then smashes her car into the truck & suddenly, the truck is on the edge of a cliff. A few shots later & you can see nothing but flat road behind them.

Continuity: The pups run up the steps. All but one (Rolly) reach the first landing. But, in the next shot, there are 3 other puppies still on the steps who jump up to the landing.

Continuity: When Cruella is writing the check with her "wretched" pen, the colors of her hair are on opposite sides from normal.

Continuity: Right after the 15 puppies are born, Roger is holding the dead puppy who is brought back to life. He then tells off Cruella, saying she may not have any of the puppies, and the sickly puppy is still upstairs with them. Pongo then runs downstairs to tell Perdy that Cruella is gone, and next to Perdy are 15 puppies. Shouldn't there be 14, considering the 15th is still upstairs?

Continuity: When Perdy is giving birth, Roger gets up & starts to dance with Pongo. When he's standing, the pipe that was in his hand is gone. When he sits down, the pipe has returned. But, in the following shot, the pipe is gone again.

Continuity: Pongo & Perdy make their escape out through the hole in the door. Perdy is in front of Pongo. In the next shot, Pongo is in the front.

Continuity: Cruella goes flying off a cliff & lands her car into a snow bank. Her car goes half way into the bank, covering her windshield completely. But, in a shot from inside the car, you can see there is no snow on her windshield at all.

Continuity: In the old De Vil mansion, Jasper is drinking a bottle of wine. He pours it down his throat, then slugs it, then pours it again. When he puts the bottle down, it has hardly lost any wine in it. In the following shot of the wine bottle, the level has dropped even more.

Continuity: When Roger & Anita fall into the pond, Pongo's leash disappears from around their legs & even from Pongo's collar.

Continuity: Cruella shakes the pen on Pongo and Roger, however the ink disappears from Pongo in the following shot.

Continuity: The thugs fall down the steps & land on the middle landing. You can see all of the steps & there are no puppies on them. In the next shot, all of the puppies are on the steps, just reaching the bottom.

Continuity: Rolly stops on the steps & is all alone on the steps. He then starts to run up the second set of steps. In the next shot, you can see the entire set of steps, but Rolly is gone.

Continuity: We see Anita walking her female dalmatian. She's wearing a light brown outfit. But, a few shots later, as we see her crossing the street to the park, her outfit is dark brown. It remains dark brown for the rest of the scene.

Deliberate "mistake": When they pull away from the barn, the thugs' truck makes a screeching noise on the thick snow.