What is the Fattest Dog? And 15 Fattest Dog Breeds

Obesity in dogs is a very real problem. While every dog benefits from regular exercise and a regulated, healthy diet, some dog breeds—the fattest dog breeds, really—are just more likely than others to struggle with their weight. In fact, a 2020 survey shows that as many as 56 percent of dogs in the U.S. are either overweight or obese.

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And their humans don’t feel too good about it either. A survey from Banfield Pet Hospital found that 62 percent of pet owners admitted that their pet’s obesity diagnosis left them feeling uncomfortable. Of the 1,000 pet owners (whose animals were either overweight or obese) surveyed, 93 percent also said they face hurdles in maintaining a healthy weight for their pets at home.