This 30-minute Saturday morning cartoon was produced by Ruby-Spears Productions and aired a total of 26 episodes. The first season, called "Heathcliff and Dingbat," ran for 13 episodes and included backup segments with Dingbat and the Creeps (who were created specifically for this show). The second season, called "Heathcliff and Marmaduke," ran for 13 episodes and featured backup segments with fellow comic strip character Marmaduke.
Barbie and Billy Winslow go to play a baseball game and reluctantly bring Marmaduke along to be the mascot. Barbie has to sit out the last inning and Marmaduke steps in to take her place with their team down one to nothing. Can Marmaduke help the team win the game?Watch Now:iTunes
An alligator escapes from the zoo and is really hungry when he spots Heathcliff going through some garbage cans. Can Heathcliff avoid the alligator and keep from being on the menu?Watch Now:iTunes
Marmaduke and the kids are playing in the park and Mr. Nicely is watching them play when J. D. Taggart drives up and says that he is repossessing the lot if the loan is not paid quickly. Can they raise enough money in time to pay off the loan and save their playground?...more+Watch Now:iTunes
Marmaduke sees a female bulldog named Missy and he instantly falls in love with her but there is a male bulldog that lives in the same yard with her and he doesn't like Marmaduke. Will Marmaduke win her over or will the other bulldog keep Marmaduke away?Watch Now:iTunes
Marmaduke sneaks aboard ship with the WInslows and now he has to guard an ape to earn his keep. Can Marmaduke keep the crafty ape from causing trouble?Watch Now:iTunes
The Winslows take a trip to the beach and Marmaduke tangles with a shark. Can Marmaduke catch the shark or will it be vice versa?Watch Now:iTunes
Heathcliff read in the paper that a reward is offered for the capture of an escaped six foot mouse. Can Heathcliff capture the raging rodent?Watch Now:iTunes
Marmaduke dresses up to go out trick or treating. Will he get treats or is he in for tricks?Watch Now:iTunes
Heathcliff receives a letter and briefcase from a cute female spy and is told that he must deliver it to the dock. Can Heathcliff make it to the dock with the letter before a couple of enemy spies grab it?Watch Now:iTunes
Mr. Winslow wants to take Marmaduke to a veteran's BBQ, but Marmaduke hears him wrong and thinks that he means to take him to the veterinarian and Marmaduke goes into hiding. Can Mr. Winslow find him and get him to the park to enjoy the BBQ?Watch Now:iTunes
The Winslow family go on a camping trip and Marmaduke sneaks in to go along. How will Marmaduke do on his first camping trip?Watch Now:iTunes
Marmaduke digs up a chunk of gold an Phil and Dottie head into town to get it check and leave Marmaduke with the kids to guard the claim. Will the tough old prospector, who has seen all this, take the claim from them?Watch Now:iTunes
Marmaduke is sleeping on the couch when he hears a TV commercial offering to train dogs for the police department in the Canine Corp. Can Marmaduke prove himself worthy enough to be in the Canine Corp?Watch Now:iTunes
Heathcliff and Iggy are competing against Muggsy and Spike in the annual Pet 'N Pal Cross-Country Sled Race and the winner gets a gold trophy and all the pizza they can eat at Luigi's Pizza Parlor. Will Heathcliff and Iggy be able to overcome all of the obstacles that Spike and Mugsy put in their way and win the race?
Mr. Snyder is planning several ways to keep Marmaduke out of his yard and keep him from digging up and burying bones. Can Marmaduke get his bones back before he loses them for good?
Marmaduke is left at the house while the Winslows go to the store and he starts to dream about the wild west. Does Marmaduke get to enjoy the dream or is it going to be a nightmare?
Marmaduke babysits for Aunt Kay's dog Sweetums while she and Barbie go to the charity bazaar. Sweetums has a collar worth $50,000 and there is a crook that has been waiting for an opportunity to grab it.