"His problem is with his esophagus, and it does not contract to push the food or water down, and so it's very difficult for him to eat by himself," Barb Grodicky, of the Lethbridge and District Humane Society in Alberta, Canada, tells CTV News.
So staff put the 7-year-old castaway in a high chair, or as some call it, a bailey chair.
He's spoon-fed by shelter staff while sitting upright, allowing his food to slide down on his throat.
In all, it takes him 15 minutes to down his dinner - a specially prepared mix of wet food, pumpkin puree and ground kibble.
But Mickey has made every loving spoonful count, packing on some 15 pounds since arriving at the shelter nearly two years ago.