Mrs Sullivan said: "We're not breeders. They're already costing us an arm and a leg to be honest."
The 1961 Disney animation, One Hundred And One Dalmatians, also features a litter of 15 pups. The Sullivans hope the parallels end there, however.
In the story, of course, the litter has to be rescued after it is abducted by villain Cruella De Vil to make a fur coat.