New Study Links Dog Breed and Environment to Canine Obesity

Obesity in dogs is no joke, about half of U.S. dogs are overweight. A new study from Texas A&M University and the Dog Aging Project (DAP) digs deeper into why, pointing to breed, environment, and food motivation all working together.
The researchers analyzed survey responses from over 50,000 dog families, paired with veterinary body condition scores submitted through the Dog Aging Project (DAP). What they uncovered is a complex tapestry of influences, but with clear lessons for pet owners.
First up: breed. Dogs in the sporting group, mostly Labrador retrievers, Golden retrievers, spaniels, and setters, show a roughly 10% higher likelihood of being highly food‑motivated compared to mixes or non‑sporting breeds.
In plain terms: these dogs love food, like, really love it, and are more likely to overeat. “Our study confirmed that dogs in the sporting group … have a greater likelihood to have high food motivation,” says Dr. Kate Creevy from Texas A&M’s College of Veterinary Medicine.
Next: environment. Dogs living in cities, or in homes with multiple dogs, also tended to score higher in the food drive. That may be due to reduced daily exercise in urban settings or the ease of free‑feeding in multi‑dog homes, where meals might be left out all day for convenience.
As Dr. Creevy puts it, “Some dogs may seek food out of boredom… owners with multiple dogs may choose certain feeding practices, including free feeding, which can lead to more food being available”.
Interestingly, owners are more motivated to act when they recognize the dog is overweight, but often ignore it when the vet does.
About one‑third of veterinary records in the study were missing a body condition score (BCS), a nine‑point scale vets use to assess fat coverage. And without that score, it’s harder to motivate real change. “A BCS plays a key role in helping veterinarians communicate with owners about their dog’s weight,” says Dr. Creevy.
For sporting breeds like Labs and goldens, owners may need stricter portion control, more structured play and walks, and careful treat habits.
City‑dwelling dogs might benefit from enrichment toys and scheduled outings to stave off boredom eating. Multi‑dog households may find individualized feeding routines helpful.
And vets can improve outcomes by consistently including BCS in annual health records and educating owners on what healthy looks like.
This aligns nicely with related genetic research. For example, Labradors have been shown to carry “hungry genes” like DENND1B, which not only influence hunger but also how many calories they burn at rest, and these genes overlap with similar genes in humans.
As Dr. Eleanor Raffan from Cambridge explained: “Your dog’s genes are not their destiny, but it’s really hard work to keep a genetically predestined dog away from its destiny”.
Dogs may beg, but science shows that behind those puppy eyes might be genes that push them toward overeating. Combine that with modern lifestyle traps, and it’s easy to see how chubby pups become the norm.
But the good news is, it doesn’t have to stay that way. With breed‑aware feeding, thoughtful environment planning, and clear communication with your vet, you can help your dog stay vital, lean, and happy.
After all, being a pet parent is all about caring deeply, and that means making choices that honor our dogs’ health, their genetic shape, and their zest for life. This study doesn’t just point out the problem; it empowers us to fix it.
Join the PetGuide community. Get the latest pet news and product recommendations by subscribing to our newsletter here.

Nevena is a freelance writer and a proud mom of Teo, a 17-year-old poodle, and Bob, a rescued grey tabby cat. Since childhood, she had a habit of picking up strays and bringing them home (luckily, her parents didn't know how to say NO). When she's not writing for her fellow pet parents, Nevena can be found watching Teo sleep. To her defense, that's not as creepy as it sounds!
More by Nevena Nacic