There’s no need to body shame your Labrador retriever—new research shows that nearly 23% of the dog breed is missing part of a gene that helps control hunger. The deletions take place in POMC, which helps us feel full, scientists report today in Cell Metabolism. Dogs with this mutation are about 2 kilograms heavier on average and are at least 10% more likely to beg for food or hunt for scraps, according to a survey of pet owners. The finding may explain why Labradors are one of the most overweight dog breeds, with 60% of U.S. labs alone considered obese. But there’s a silver lining. Labs are also the most popular guide dogs because their food motivation makes them easy to train. Indeed, more than three-quarters of the service Labs the team looked at had a chunk missing from their POMC gene.