Every dog out there can't help but beg for table scraps every once in a while. But it turns out there's one breed that's more food-obsessed than the rest, and it's the most popular dog in America.

A new study found Labrador retrievers are more likely than other breeds to beg for treats and generally be obsessed with food. That's because they have a specific gene mutation that sets them apart from the rest. It's the first of its kind that has been directly associated with canine obesity.

The study, published in the journal Cell Metabolism, looked at specific genes that were related to obesity in humans. Obese dogs were more likely to have mutations in the gene POMC, and that genetic tweak was associated with food-motivated behaviors. Dogs with a specific POMC deletion were more likely to beg for food, pay attention at mealtimes, scavenge for scraps, and weigh more in general. 

Though not all food-obsessed dogs had the gene mutation, it was still a clear connection. And in a fascinating detail, the study also found that the gene mutation was more likely in Labradors that were working as assistance dogs. "It was surprising," University of Cambridge researcher Eleanor Raffan said in a statement. "It's possible that these dogs are more food-motivated and therefore more likely to be selected for assistance-dog breeding programs, which historically train using food rewards." 

The gene mutation was only present in Labrador retrievers and flat coat retrievers. So if you have one of these pups, the researchers suggest keeping a closer eye on their weight. Make sure you're vigilant about portion control and don't give in to the puppy-dog eyes begging for a piece of steak at the dinner table. It's tough, but it's for your best friend's own good.