Raw Diet vs Kibble for Dogs: Here’s What the Research Says
For many pet owners, feeding raw meat, organs, and bones feels more natural. It aligns with the idea that dogs should eat like their wild ancestors, and it promises benefits like improved coat quality, better digestion, and overall vitality. Rightly so, raw diets have become one of the most polarizing topics in dog nutrition.
But modern dogs are not wolves; can your pug take down an elk? All jokes aside, modern veterinary medicine does not make recommendations based on what feels intuitive. When we look at the peer-reviewed research, we consistently see that the perceived benefits of raw feeding are difficult to substantiate, while the risks are well established in the literature.
The Appeal vs The Reality
As interest in whole foods and less processed diets has grown in human nutrition, the same trend has carried over into the pet world. Raw feeding is often positioned as a more “biologically appropriate” option, and many owners report positive changes after making the switch.
Some studies do support modest differences between dogs fed raw diets and those fed kibble. These can include improved skin or coat scores, firmer stools, and changes in certain laboratory values. However, it’s important to consider the context of these studies, which are small and observational. They also often include dogs whose overall care differs significantly from the average pet population. Dogs fed raw diets are more likely to receive supplements, have higher activity levels, and follow different grooming routines.
These factors alone can contribute to the perception of increased skin health, better weights, and overall condition. Even when differences are observed, they are generally modest. And importantly, they do not translate into clear evidence of improved long-term health or disease prevention.
The Raw Diet Risks
While the benefits remain unclear, the risks associated with raw diets are consistently supported in the research.
Foodborne Illness
Raw meat commonly contains bacteria such as Salmonella and E. coli. Multiple studies have confirmed that these pathogens are present in a meaningful percentage of raw diets.
What makes this particularly important is that dogs do not need to appear sick to spread these organisms. They can shed bacteria in their saliva and stool, contaminating food bowls, household surfaces, and even their owners through routine contact. After all, many people allow their dogs to lick their hands (or their faces).
This turns raw feeding into a household-level health consideration, not just a dietary choice for the dog. Because of this, organizations like the American Veterinary Medical Association advise against feeding raw animal protein due to the risk of disease transmission to both pets and people.
Balanced Nutrition
All animals require a precise combination of protein, fat, vitamins, and minerals to maintain health over time. These requirements are not intuitive, and they cannot be met reliably by assembling ingredients without careful formulation.
Research evaluating raw and homemade diets has found that a large proportion contain significant nutritional excesses or deficiencies. These imbalances typically don’t cause immediate symptoms. Over time, however, they can lead to serious issues, including bone disease, organ dysfunction, and metabolic problems.
This is especially concerning for growing puppies, senior dogs, or pets with underlying medical conditions.
Risk vs. Benefit: A Clinical Perspective
When veterinarians evaluate any treatment, the question is always whether the benefits outweigh the risks. In the case of raw diets:
The benefits are modest, inconsistent, or anecdotal
The risks, particularly infection and nutritional imbalance, are well-documented
It is not a rejection of new ideas or alternative approaches but a reflection of the current evidence: the veterinary community does not recommend a raw diet.
Why “Natural” Doesn’t Always Mean Better
One of the most persistent ideas behind raw feeding is that it is more natural. But modern dogs have been domesticated significantly from their wild ancestors. They have adapted to living alongside humans for thousands of years, including developing the ability to digest a wider range of foods, including carbohydrates. Wolves (and dogs) are not carnivores — they’re omnivores like us.
More importantly, the goal of feeding today is not to replicate a wild-type diet. It is to support long-term health, prevent disease, and ensure nutritional consistency over the course of a dog’s life. For most dogs, the safest and most evidence-based approach is to feed a complete and balanced commercial diet, whether it’s kibble or canned.
These diets are formulated using established nutritional standards and are tested to ensure they meet a dog’s needs over time. They are also produced under controlled conditions that reduce the risk of contamination. Did you know that dog food has to pass the same quality control tests as food for people?
Veterinarians often rely on guidelines from the World Small Animal Veterinary Association when evaluating pet food companies. These guidelines focus on factors such as:
Nutritional expertise
Quality control processes
Research and feeding trials
Ingredient sourcing and manufacturing standards
Brands that consistently meet these criteria include Hill’s, Royal Canin, Purina, Iams, and Eukanuba. These recommendations are not based on marketing or brand preference. They are based on which companies demonstrate a consistent commitment to scientific rigor and nutritional adequacy. Contrary to popular belief, veterinarians do not benefit from recommending these diets.
What This Means for Your Dog
Raw diets appeal to a desire to do something more natural, more thoughtful, and more intentional for our pets, which is compelling! When we step back and evaluate the evidence, the conclusion is that the potential benefits of raw feeding remain unclear. But the risks are well established, extending beyond the pet to the people who care for them.
In veterinary medicine, recommendations are not made based on trends or intuition. They are made based on what is safest, most reliable, and most likely to support long-term health. For most dogs, that means a complete and balanced commercial diet.
If you have questions about your dog’s nutrition or are considering a change in diet, the best next step is to work with your veterinarian to create a plan that is both safe and tailored to your pet’s needs.
Schedule an appointment with Dr. Olson to talk through your dog’s diet and make a plan you can feel confident about.