"Doggone Biscuits" is the thirty-second episode of Mickey Mouse.
Mickey is about to go on holiday. He leaves Minnie with Pluto and his bowl, his leash, and a big bag of Pluto's favorite treats (which are very fattening). Mickey decided to leave for a month but before that he kissed Minnie and asks her to take take of Pluto. Minnie agrees as Mickey closed the door. Minnie decided to have so much fun with Pluto, only to realize that he need more biscuits. Minnie at first didn't allow Pluto to eat the biscuits, mostly because they are fattening, but despite this, Minnie gives the treats instead.
After for almost 2 days, the phone rang. Minnie answered to Mickey that Pluto is fine as she keeps on giving him the biscuits, and she answered him that she didn't give him all the treats, only to realize that Mickey answered her that they are very fattening, much to her shock. Pluto's belly is so fat and the floors breaks and Pluto falls as well as Minnie holding the phone. Mickey ends the call and Minnie falls on to Pluto's big belly and she decides to get him back him shape.
Her first plan was to have Pluto wear a slim sweater but that didn't do. So she gets another idea by putting him in a sauna. When Minnie saw him, he was all dry. Minnie fills Pluto back alive with water but the tap handle broke off and Pluto starts to roll and break the furniture out of Mickey's house, while Minnie gets out of fat Pluto. Meanwhile, Mickey was skipping and singing to see his Pluto. Plan C was Minnie wanting to take Pluto for jogging, but Pluto doesn't want that. So Minnie gets a better idea to give him a motivation.
Minnie disguises herself as a mailman and Pluto follows her to lose his weight. Minnie takes of her mail cap and inside was a fire hydrant. Out of her mailbag was 3 cats. The final touch was Minnie holding the back of the fire truck and her heels turns into roller skates and Pluto losing his weight was a helpful idea. Suddenly, the fire truck turned left and the ladder slapped Minnie away and Minnie bumps and jumps over a truck full of dogs and the dogs run out and chase her. The dead end was a chicken setting his hammock on 2 tress and Minnie and the dogs bump into it and it slingshotted them away. The hammock gets stuck on Pluto's butt and gets stuck at a mailbox and a car falls down and many things fell and Pluto was feeling too weak and heavy that he has so many things carried on his back.
Mickey calls Pluto but hears Minnie and the other dogs falling on him. Mickey and Minnie start to have a fight with the dogs but they call Pluto to save them. Pluto stomps and runs fast with the heavy load to save them. At the end, Mickey thinks that Pluto is a brave and strong hero.
- Pete (cameo)
- This is the third Minnie Mouse-themed episode (the first two were "Eau de Minnie" and "Clogged"), with the title card saying "Minnie Mouse" instead of the usual "Mickey Mouse."
- The sweater was very similar to Pluto's Sweater.
- Mickey sings about seeing Pluto to the tune of "How Do You Do and Shake Hands" from Alice in Wonderland.
- Pete's role and appearance as a dogcatcher in this short is similar to the classic Mickey Mouse short "The Worm Turns".
- It is revealed that Minnie used to be obese before going into the sauna.