Continuity mistake: Screwy Squirrel puts some glue on the floor and Lenny treads on the glue, ripping off his paws in the process. At this point, you can see Lenny is in bare feet, but when he is walking a few seconds later, his paws are back on his feet again.
Continuity mistake: When we first see Lenny at the beginning of the short, he is lying outside his kennel and there is nothing in front of him, but when we see Lenny in the next shot, a bone and a bowl have suddenly appeared.
Continuity mistake: When Screwy Squirrel reaches his home in the forest, you can see there is nothing in the ground by the door of the house. But when Lenny knocks on the door later on, a hole appears out of nowhere.
Continuity mistake: When Screwy Squirrel pulls the plug in the bath, he is initially holding the plug with his right hand, but in the next shot he has his right hand on the bath.
Continuity mistake: When we see Lenny for the first time, he complains that he hasn't got a friend and crushes his bone and bowl. At this point, you can see the crushed up bone and bowl are in front of Lenny, but after we see the dead mouse, we cut back to Lenny and both the bone and bowl have disappeared.
Continuity mistake: When Lenny jumps into the bath in the bathroom, you can see the soap dish is on the left hand side of the towel, but in the next shot it is now on the right hand side.
Continuity mistake: When Screwy Squirrel is breaking the walnuts by putting on his head and hitting them with a hammer, he puts down the hammer to eat the walnuts, but when the pet shop owner takes Screwy out of his cage, the hammer has disappeared.
