What Is a Raw Dog Food Diet?
A raw dog food diet — sometimes called a BARF diet (Biologically Appropriate Raw Food or Bones and Raw Food) or a prey-model diet — consists of uncooked animal products including muscle meat, organ meat, raw meaty bones, and sometimes fruits, vegetables, and dairy. The concept was popularised by Australian veterinarian Ian Billinghurst in the 1990s, who argued that dogs would thrive on a diet resembling what their wild ancestors ate before commercial pet food existed.
Raw diets fall into two broad categories: home-prepared raw diets, where the owner sources and combines ingredients independently, and commercial raw diets, which come pre-formulated and frozen or freeze-dried from manufacturers. Commercial options range from patties and nuggets to dehydrated powders that are rehydrated before serving. Each type has different convenience, safety, and nutritional profiles.
The raw feeding movement has grown significantly over the past two decades, driven by owner dissatisfaction with conventional commercial pet food, a desire for ingredient transparency, and anecdotal reports of health improvements. Understanding both the potential benefits and the substantive risks is essential for any owner considering this feeding approach.
Potential Benefits of Raw Feeding
Proponents of raw diets report a range of improvements in their dogs, including shinier coats, smaller firmer stools, increased energy, better dental health, and improved skin condition. Some owners of dogs with chronic digestive issues or allergies report significant symptom relief after switching to a raw diet, particularly when novel protein sources are used.
The dental argument for raw feeding has some scientific support. Chewing raw meaty bones provides mechanical abrasion that can reduce tartar accumulation. Studies have shown that dogs eating raw diets tend to have lower levels of dental calculus than those fed conventional kibble, though thorough research specifically on raw feeding and dental health outcomes in dogs remains limited.
Higher moisture content is another potential benefit. Raw diets typically contain 60–80% moisture, far closer to a dog’s natural prey than kibble (which averages around 10%). Adequate hydration supports kidney function and urinary health, particularly in dogs prone to urinary tract issues. The relatively high protein content of well-formulated raw diets also aligns with dogs’ classification as primarily carnivorous animals.
Risks and Concerns About Raw Diets
Major veterinary organisations — including the American Veterinary Medical Association (AVMA), the British Veterinary Association (BVA), and the World Small Animal Veterinary Association (WSAVA) — do not recommend raw diets due to concerns about food safety, nutritional imbalance, and public health risks.
Bacterial contamination is the primary safety concern. Raw meat is a well-established source of pathogens including Salmonella, Listeria, Campylobacter, and E. coli. Studies consistently detect these bacteria at high rates in commercial and home-prepared raw pet foods. Dogs may remain asymptomatic while shedding these bacteria in their faeces, posing a risk to human household members — particularly children, the elderly, and immunocompromised individuals. A 2018 study published in Vet Record found that 54% of commercial raw dog food samples tested positive for Salmonella.
Nutritional imbalance is another serious concern, especially for home-prepared diets. Meeting all of a dog’s macro and micronutrient requirements without supplementation or veterinary nutritionist guidance is extremely difficult. Calcium and phosphorus imbalances — common in raw diets heavy on muscle meat without adequate bone — can cause metabolic bone disease. Excess organ meat can cause vitamin A toxicity. Multiple studies of home-prepared raw diets have found significant nutritional deficiencies or excesses.
Bone hazards are also a factor. While raw bones are generally safer than cooked bones (which become brittle and splinter), raw bones can still cause dental fractures, gastrointestinal obstruction, and internal perforation. Supervision during bone consumption and selecting appropriately sized bones are essential.
Choosing the Right Raw Diet (If You Decide to Try It)
If you choose to feed a raw diet despite the risks, doing it as safely and nutritionally soundly as possible is paramount. For commercial raw diets, look for products that meet AAFCO (Association of American Feed Control Officials) nutrient profiles and have undergone nutritional analysis. High Pressure Processing (HPP), a pasteurisation technique that eliminates pathogens without cooking the food, significantly improves safety without denaturing proteins — look for HPP-treated options.
For home-prepared diets, consult a board-certified veterinary nutritionist (DACVN) who can formulate a nutritionally complete recipe for your specific dog. Using recipe formulation software such as BalanceIT or Pet Diet Designer adds an additional layer of confidence. Supplementation — particularly with calcium, omega-3 fatty acids, zinc, and certain vitamins — is typically necessary to balance home-prepared raw meals.
Safe handling is non-negotiable. Freeze raw meat at -20°C for at least three days before use to kill some parasites. Thaw in the refrigerator, not at room temperature. Disinfect all surfaces, bowls, and utensils after contact with raw food. Wash hands thoroughly after handling raw meat. Dispose of uneaten raw food within 30 minutes and do not leave raw meals out for extended periods.
Who Should Avoid Raw Diets for Their Dogs
Raw diets are most risky in specific circumstances. If your household includes immunocompromised individuals, young children, pregnant women, or the elderly, the pathogen risk from raw pet food is a significant concern that should factor heavily into your feeding decision. Dogs with compromised immune systems — including those receiving chemotherapy, those with parvovirus or other immunosuppressive conditions, and very young puppies — should not be fed raw diets.
Dogs with pancreatitis, inflammatory bowel disease, or certain liver conditions may not tolerate the high fat content of many raw diets. Always discuss any major dietary change with your vet before implementing it, especially for dogs with existing health conditions.
The raw diet debate is unlikely to be resolved soon, as well-designed long-term studies are scarce. Making an informed decision — weighing the anecdotal evidence for benefits against the documented risks, and implementing appropriate safeguards — is the most responsible approach for any owner interested in this feeding philosophy.