Continuity mistake: In one episode, an old friend of Wilma's calls Wilma "Wilma Pebble" (using her maiden name, unaware she got married). Later in the series, as well as the 1994 movie, Wilma's maiden name is revealed to be "Slaghoople."
Continuity mistake: Throughout the first season, Fred and Barney's boss' name changes from George Slate to George Granite and back.
Continuity mistake: When Fred and Barney arrive at the Rockland Club, they park their car right in front of the front door. When Betty and Wilma arrive, they park their car in front of the door and Fred and Barney's car has disappeared.
Continuity mistake: When Fred and Barney are fighting over the television there are three knobs on the TV set, but when Wilma starts talking to Fred they have vanished, then they reappear.
Continuity mistake: When Fred and Barney arrive at the bowling alley, they are seen standing in the doorway, but the very next shot shows Fred inside the bowling alley and Barney is nowhere in sight.
The Monster from the Tar Pits - S1-E7
Continuity mistake: When Fred comes in wearing the monster costume, there's a handle on the interior side of the door, but it vanishes when Fred hides to scare Barney.
Continuity mistake: Wilma opens the bedroom door to find Fred covered in flour, but in the next shot the bedroom door has vanished while Fred stands in the doorway.
Continuity mistake: At the 18th hole, Fred's opponent Ben Boulder hits his tee shot on the fairway. But we see Boulder doing his second shot, he doesn't hit the ball from the fairway; he hits the ball from the same tee box on which he did his first shot.
Continuity mistake: While sitting down at the celebration dinner, Wilma has a blue dress and Betty has a white dress. When they get up and walk away from the table, they've swapped colours.
Continuity mistake: The cake in this episode is first called "Upside Down Flint Rubble Bubble Cake." Later in the episode, it's suddenly called "Upside Down Flint Rubble DOUBLE Bubble Cake."
Continuity mistake: When Wilma is serving the two steaks for Fred at the dinner table, you can see there is steam coming out of the steaks, but when she places them in front of Fred the steam has disappeared.
Continuity mistake: When Fred has a nightmare he drops his pillow on the floor, and just as Wilma gets out of bed to pick it up, Wilma's pillow simply vanishes into thin air mid-shot. (00:13:50)
Continuity mistake: During the circus performance, Rodney the knife thrower is wearing a one-shoulder outfit, which repeatedly switches from his left, to his right shoulder, and back again. (00:17:30)
Continuity mistake: When Fred introduces Wilma's book to Barney, the book is red, but when Wilma is reading the book in bed later, the colour is now green.
Continuity mistake: When Fred is reading his letter about his position being accepted at the Stone Valley Inn, you can see Wilma is sitting in the chair next to him, but in the next shot the chair is empty and Wilma is nowhere to be seen, then she reappears in the chair.
Continuity mistake: When Fred hands Barney the job advert he saw in the newspaper, Barney takes it with his right hand but a close-up of the advert shows him holding it with his left hand.
Continuity mistake: When Fred is sleeping, the time on the alarm clock reads 7 a.m., but when we see a close-up of the clock, it reads 5 a.m.
Continuity mistake: After Fred and Barney leave for the hospital without Wilma they realise the mistake and head back to the house, and when it cuts to Wilma in the bedroom Dino jumps atop the blue blanket on the bed, but in the next shot the blue blanket is gone, and then it reappears for Dino to hide under. (00:16:35)
Continuity mistake: When we first see Dino at the condo, he has no collar on him. But when he chases the Von Slatens out, the collar appears.
Continuity mistake: When Fred and family start their drive toward Jellyrock Park, the trailer has one window and a door on its right side (behind Wilma's side of the car), but when they reach Jellyrock that side of the trailer now has two windows and the door is gone. (00:11:50)
Answer: The name of the pet is "Baby Puss." He has appeared in episodes, but only a very few. The first episode was probably "The X-Ray Story" from season 2.
Bishop73