BARF Raw Diet Guide

DigestiveQ&AMeongsiljang Veterinary Advisory Board

BARF is a raw diet for dogs that consists of raw meat, bones, organs, and vegetables. While it can offer benefits when nutritional balance and hygiene are properly maintained, there are significant risks of bacterial infection and nutritional imbalances, so be sure to consult your veterinarian before starting this diet.

What is the BARF Raw Diet?

A puppy sitting next to a bowl filled with a BARF raw diet.

BARF (Biologically Appropriate Raw Food) is a raw diet that feeds dogs uncooked meat, raw bones, organs, and vegetables. Before starting, it’s essential to understand nutritional balance and hygiene. Incorrect ingredient ratios can lead to calcium-phosphorus imbalances and bone diseases, while Salmonella and E. coli in raw meat may infect both your dog and your family. Always consult a veterinarian or veterinary nutritionist before beginning.

Basic Composition Principles of the BARF Diet

The BARF diet commonly recommends a composition of approximately 70% muscle meat, 10% raw bone, 10% organs (including liver), and 10% vegetables and fruits. While these figures are presented as theoretical guidelines mimicking the diets of wild animals, veterinary clinical nutrition research indicates that the nutritional adequacy of homemade raw diets is uncertain, with cases of nutritional deficiencies reported. Therefore, this ratio has not been established as a standard validated by veterinary nutrition science. Dogs are omnivores capable of digesting various nutrients, including carbohydrates, so their diet does not need to consist solely of meat. In practice, it is most important for a veterinary nutrition specialist to design the specific ratios based on the individual dog’s age, health status, and activity level.

BARF vs. Regular Kibble Comparison

Item	BARF raw diet	Dry food	Wet food
Moisture content	about 70%	about 10%	about 75%
Automatic nutritional balance guarantee	False	True	True
Bacterial contamination risk	High	Low	Low
Storage convenience	Freezing required	Room temperature OK	Refrigeration required (after opening)
Cost	High	Medium	Medium–high
Prep time	Long	Short	Short

Nutritional balance depends on the owner's recipe design and whether supplements are used.

Major Risks of BARF

There are three main risks you should be aware of when feeding a BARF diet.

Bacterial Infection: Raw meat often tests positive for Salmonella, E. coli, and Campylobacter. This poses a risk not only to dogs but also to children, the elderly, pregnant women, and immunocompromised individuals in the household.

Nutritional Imbalance: Homemade raw diets are prone to calcium-phosphorus imbalances and may lack various other micronutrients. Studies have reported abnormal bone development in growing puppies on such diets.

Parasitic Infection: Raw meat can harbor parasites such as Toxoplasma gondii. Caution is advised because freezing does not eliminate all pathogens.

Dogs Who Should Not Be on BARF

Dogs taking immunosuppressants or undergoing cancer therapy have significantly compromised immune systems due to both their underlying conditions and treatments, making bacterial and parasitic infections from raw diets potentially life-threatening. Dogs with pre-existing health conditions face increased risks of nutritional imbalances and infections from raw feeding, so it is essential to consult your veterinarian beforehand. We do not recommend raw diets for puppies under 12 months of age, as nutritional imbalances during this growth period have been linked to abnormal bone development. Additionally, households with young children (under 5 years old), pregnant individuals, or immunocompromised persons should avoid raw diets due to the heightened risk of bacterial infection. Always consult your veterinarian first.

Principles to Follow When Feeding Bones

While bones in a BARF diet serve as a source of calcium, they also pose the greatest risk. Here are the essential safety guidelines to follow.

Raw bones only: Never feed cooked bones, as they become brittle and can splinter, potentially causing perforations in the esophagus or intestines. Although raw bones are less likely to shatter than cooked ones, veterinary textbooks note that they can still produce sharp fragments that may damage the mucous membranes at any point in the digestive tract. Grinding bones can reduce the risk of trauma and obstruction, but this method makes calcium absorption rates uncertain.

Appropriate size: Choose bones larger than your dog’s head to prevent them from being swallowed whole.

Supervision is mandatory: Always monitor your dog while they are chewing bones.

Caution for small breeds: Small dogs are at risk of choking or blocking their airway or esophagus if they swallow small bones, such as chicken necks or wings, whole. Such obstructions can be life-threatening in severe cases.

A puppy chewing on raw bones under the owner's supervision

BARF Transition Method and Hygiene Management

When transitioning from your current kibble to a BARF diet, do so gradually over a minimum of two to four weeks. Sudden changes can cause diarrhea or vomiting. Use only fresh ingredients, and freeze them immediately after purchase at -18°C or below. Thaw the food slowly in the refrigerator; avoid thawing at room temperature due to the high risk of bacterial growth. Use separate utensils and bowls designated exclusively for raw meat, and wash them immediately after feeding with hot water and detergent.

Nutritional Design Is Essential for Homemade Diets

Homemade BARF diets should be based on recipes designed by veterinarians specializing in nutrition or certified animal nutritionists. Simply following ratios found online can lead to long-term issues such as calcium and vitamin deficiencies, as well as zinc and iodine shortages. Puppies, senior dogs, and dogs with specific health conditions require individually tailored meal plans.

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Veterinarian

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.

Frequently Asked Questions

Is BARF really healthier than commercial pet food?

There is currently a lack of large-scale clinical evidence demonstrating that BARF diets are healthier than commercial pet foods. While short-term benefits such as improved coat shine and reduced stool volume have been reported, studies confirming their superiority in long-term health indicators remain limited.

Does feeding a BARF diet really eliminate tartar?

While chewing raw bones can help reduce tartar buildup to some extent, it doesn’t completely prevent periodontal disease. Regular brushing and professional dental cleanings are still necessary, even if you’re feeding a BARF diet.

Will freezing meat kill parasites?

Freezing can help reduce the risk of infection from certain parasites, such as Toxoplasma. However, veterinary nutritional science has not yet established specific freezing temperatures and durations required to kill these parasites. It is important to remember that freezing does not kill bacteria; it only temporarily inhibits their activity and does not achieve complete sterilization.

Are there any raw ingredients that should never be given to dogs?

Onions, garlic, grapes, raisins, avocados, chocolate, and xylitol are toxic to pets whether raw or cooked, so they must be strictly avoided. It is also safest to avoid raw pork and raw salmon, as there have been reports of potential pathogen infections. Always consult your veterinarian before feeding any new food to ensure the ingredients are safe for your pet.

My dog is on a BARF diet and has diarrhea. What should I do?

During the first 1–2 weeks of transition, mild changes are common. However, if symptoms persist for more than three days or are accompanied by bloody stools or vomiting, seek veterinary care immediately to rule out bacterial infection, nutritional imbalance, or individual intolerance.

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References

[1] Freeman LM, Chandler ML, Hamper BA et al., Current knowledge about the risks and benefits of raw meat-based diets for dogs and cats, JAVMA, 2013

[2] Morelli G, Bastianello S, Catellani P et al., Raw meat-based diets for dogs: survey of owners' motivations, attitudes and practices, BMC Veterinary Research 15:74, 2019

[3] Dodd S, Barry M, Grant C et al., Abnormal bone mineralization in a puppy fed an imbalanced raw meat homemade diet, Journal of Animal Physiology and Animal Nutrition, 2019

[4] Morelli G, Catellani P, Miotti Scapin R et al., Evaluation of microbial contamination and effects of storage in raw meat-based dog foods purchased online, Journal of Animal Physiology and Animal Nutrition 104:690-697, 2020

[5] The Dog Care Handbook, Things I Wish My Vet Had Told Me, 2024