The BARF diet is a raw feeding approach for dogs built around uncooked meat, bones, and organs. The acronym originally stood for “bones and raw food,” though it’s now commonly expanded to “biologically appropriate raw food.” The concept was popularized by Australian veterinarian Ian Billinghurst, who argued that dogs thrive on a diet mimicking what their wolf ancestors ate: high in protein from raw animal products and low in carbohydrates.
What Goes Into a BARF Diet
The standard BARF formula follows a ratio: roughly 80% muscle meat, 10% raw edible bone, and 10% organ meat. That organ portion is typically split between liver and one other “secreting organ,” meaning an organ that produces enzymes, hormones, or bile. Kidney, spleen, pancreas, brain, and thymus all qualify. Muscular organs like heart and lung are nutrient-dense but don’t count as secreting organs in this framework, so they’re grouped with muscle meat instead.
Beyond the core animal products, most BARF feeders add small amounts of fruits, vegetables, and eggs. Raw carrots are a common choice for fiber and vitamins. Some people include supplements like eggshell powder or bone meal for calcium, and a pinch of salt for sodium. The proportions vary depending on who you ask, but the emphasis stays the same: raw, whole animal ingredients as the foundation, with plant foods playing a supporting role.
Claimed Benefits and What Research Shows
People choose raw feeding for a handful of reasons, and some of them do have research backing. Dogs fed raw diets have shown improved coat scores compared to dogs on extruded dry kibble. Stool quality tends to improve as well. A study on boxer dogs fed raw beef found firmer, smaller stools, which is consistent with higher digestibility and less filler passing through the gut.
Limited evidence in dogs and cats suggests that raw diets may support a healthy body weight, shift gut bacteria in favorable directions, and increase the metabolism of protein and fat. Some research points to anti-inflammatory and antioxidant effects. These findings are preliminary, though, and most come from small studies. The improvements in coat and stool quality are the most consistently reported outcomes.
Dental Health
One of the more concrete benefits involves chewing raw bones. In a study on Beagle dogs, chewing raw bovine bones reduced dental calculus coverage from about 42% of the tooth surface down to 12% after just 12 days, a roughly 70% reduction. Spongy bones (the softer, marrow-rich ends) performed even better, cutting calculus by nearly 88% over 20 days. This doesn’t replace professional dental care, but it’s a measurable effect that kibble alone doesn’t replicate.
Choosing Safe Bones
Not all bones belong in a BARF diet. The distinction that matters most is between edible bones and weight-bearing bones. Edible bones are soft enough for a dog to chew and consume entirely. Poultry bones are the most popular choice among raw feeders because they’re smaller and softer. Think chicken necks, wings, and backs, or duck and turkey necks for larger dogs.
Weight-bearing bones from large animals, like beef leg bones, are denser and more likely to splinter or crack teeth. These are sometimes offered as recreational chews but aren’t meant to be eaten. Cooked bones of any kind are off the table entirely. Cooking makes bone brittle, dramatically increasing the risk of sharp fragments.
Bacterial Contamination Risks
The biggest concern with raw feeding is pathogens. Raw pet food carries Salmonella at rates consistently higher than dry kibble. Across multiple studies, Salmonella prevalence in raw pet foods ranges from about 7% to over 44% of samples tested. One Canadian study of homemade BARF diets found Salmonella in 80% of samples. Commercial raw diets tend to fare somewhat better, but contamination rates of 20% to 34% still appear in the literature. For comparison, dry pet food tested in one large U.S. survey came back positive in less than 1% of samples.
This isn’t just a risk for your dog. Salmonella shed in a dog’s stool can persist for days, and dogs who eat contaminated raw food can lick surfaces, toys, and people. The CDC recommends keeping raw pet food sealed and stored separately from human food in the freezer or refrigerator, washing your hands with soap and water before and after handling it, and cleaning any surfaces or utensils that touched the raw food. They also advise against letting your dog lick your face or any open wounds right after eating. Households with young children, elderly adults, or immunocompromised individuals face the highest risk from these pathogens.
Nutritional Gaps in Homemade Recipes
Feeding raw meat and bones alone doesn’t automatically produce a balanced diet. Homemade BARF diets prepared without guidance from a veterinary nutritionist frequently end up deficient in key vitamins and minerals. The specific gaps depend on the recipe, but calcium-to-phosphorus imbalance is one of the most common problems, especially in diets that are heavy on muscle meat and light on bone. Zinc, iodine, and certain fat-soluble vitamins can also fall short.
Commercial raw diets formulated to meet established nutrient standards reduce this risk, since they’re designed to be complete. If you’re preparing meals at home, supplements like eggshell powder for calcium, a balanced vitamin and mineral mix, and rotating through multiple protein sources and organ types all help close the gaps. Working with someone trained in animal nutrition makes a meaningful difference in getting the ratios right.
How to Transition From Kibble
Switching to raw food works best as a gradual process over about 10 days. A common schedule looks like this:
- Days 1 to 3: 25% raw food, 75% current food
- Days 4 to 6: 50% raw, 50% current food
- Days 7 to 9: 75% raw, 25% current food
- Day 10: 100% raw
Some dogs take to raw food immediately. Others need encouragement. Lightly searing the surface of the meat releases aromas that make it more appealing, and you can reduce the searing over time until meals are fully raw. Mixing in a small amount of canned sardines in water, a raw egg, or low-sodium bone broth can also help a reluctant dog warm up to the new texture.
Loose stools during the transition are normal. Plain canned pumpkin (with no added sugar or spices) helps firm things up. Adding a probiotic supplement before and during the transition supports the gut bacteria as they adjust to processing a fundamentally different type of food. If digestive upset persists beyond the transition window, slowing down the schedule or simplifying to a single protein source usually helps.