Kenji was a four-year-old Shiba Inu with the most impressive coat I'd seen in a long time — dense, bright, with the kind of texture that makes you want to run your hand through it. His owner Marcus had been feeding him a homemade raw diet for two years. "I researched it for months before I started," Marcus told me. He had a binder. Printed nutrition charts, organ percentages, calcium-to-phosphorus ratios. Kenji's wellness bloodwork came back perfect.
Six months later I saw a different raw-fed dog: Petra, a three-year-old Labrador, brought in lethargic and off her food. Her owner had switched to raw eight months prior using a recipe from a Facebook group. Petra's calcium was dangerously low, her phosphorus elevated, and she had early bone density loss. The recipe had no bone meal and the organ ratios were wrong. Her owner had no idea.
Both cases are typical. The diet can work. The question is whether you understand what it actually requires.
Raw feeding generates more heated debate than almost any other topic in pet nutrition. Advocates are passionate. Critics — including most mainstream veterinary organizations — cite real safety concerns. Both sides have valid points, and both sides sometimes overstate their case. This is my attempt at a clear-eyed summary of what we actually know.
What Are Raw and BARF Diets?
"Raw feeding" is an umbrella term for diets based on uncooked animal products — meat, bones, and organs — typically without the heat processing of commercial pet food. "BARF" is an acronym that stands for either "Biologically Appropriate Raw Food" or "Bones and Raw Food" depending on who you ask. Both terms get used somewhat interchangeably, though they can refer to slightly different formulation philosophies.
The general idea is that dogs and cats evolved eating prey, and their digestive systems are optimized for raw animal tissue rather than processed food. There's biological logic to this argument. Whether the practical execution of raw feeding under home conditions reliably delivers those theoretical benefits is a separate question.
Commercial raw diets also exist — commercially prepared raw food that's been formulated to meet nutritional standards and in some cases subjected to high-pressure processing (HPP) to reduce bacterial loads without cooking. These differ meaningfully from DIY raw diets in terms of both safety and quality control.
What the Evidence Actually Shows
I'll be honest: the research on raw feeding in companion animals is not deep. Most studies are small, observational, and have significant limitations. We don't have the large, long-term controlled trials that would definitively settle the debate.
What we do have:
Potential benefits supported by some evidence:
- Higher moisture content compared to dry kibble (particularly relevant for cats)
- Some evidence of better stool quality and reduced stool volume, likely due to higher digestibility — Kerr et al. (2012) found cats on extruded diets produced more than twice the fecal output of raw-fed cats
- Anecdotal and some small-study evidence of improved coat quality
- Higher protein digestibility in some formulations — multiple comparative studies including Algya et al. (2018) found significantly higher apparent digestibility for raw versus extruded formats
Risks supported by evidence:
- Bacterial contamination with pathogens including Salmonella, Listeria, and E. coli is documented at meaningful rates in commercially prepared and home-prepared raw diets — a review (Davies, Lawes & Wales, 2019) found Salmonella in roughly 5–21% of raw diets across international surveys and Listeria in 16–54%, versus near-zero rates in processed pet foods
- Nutritional imbalances are extremely common in homemade raw diets not professionally formulated — specifically calcium:phosphorus ratio problems, mineral deficiencies, and sometimes vitamin toxicity from excessive organ meat
- Bone fragments can cause gastrointestinal obstruction, perforation, or dental fractures
The bacterial contamination issue is the one that concerns me most in households with young children, elderly individuals, or immunocompromised people. Pets on raw diets shed higher levels of pathogenic bacteria in their feces, and transfer via licking, surfaces, and handling is a real transmission pathway — documented transmission to humans has been reported, including a UK cluster of E. coli O157:H7 infections traced back to raw pet food (Kaindama et al., 2021), and antibiotic-resistant ESBL-producing bacteria have been found at high rates in raw pet food itself (Baede et al., 2017). Evidence of those exact resistant strains being shared between pets and their owners within the same household is more limited. This doesn't mean raw feeding is impossible in households with vulnerable humans, but it requires rigorous hygiene protocols.
The Two Types of Raw Diets
Understanding the difference between commercial raw and DIY raw is important for evaluating both the risks and practical demands of raw feeding.
Commercial raw diets are produced in facilities with food safety protocols, are generally formulated to meet nutritional standards, and in the HPP-treated versions, have significantly reduced bacterial loads. They're expensive, require frozen or refrigerated storage, and require proper handling. But the nutritional formulation work is done by professionals, which removes the most common source of DIY raw failures.
DIY raw diets (also called homemade raw) are prepared at home using whole ingredients. They offer the most control over ingredient sourcing, but they put the entire nutritional formulation burden on the owner. Most DIY raw diets — in studies and in my clinical experience — are nutritionally incomplete without professional guidance. The calcium issue alone (muscle meat being high in phosphorus and low in calcium, with bone content needed to balance) is consistently problematic.
I'd recommend starting with commercial raw if you want to explore raw feeding, and only moving to DIY with input from a veterinary nutritionist.
BARF vs. Prey Model
These are the two main philosophical approaches to raw feeding, and they differ in what ingredients they include. The detailed evidence on raw feeding risks and benefits gets into the nuances, but briefly:
BARF diets include raw meaty bones, muscle meat, organs, and a portion of plant material (vegetables, fruit, sometimes dairy and eggs). Prey model raw aims to replicate the approximate composition of whole prey — roughly 80% muscle meat, 10% bone, 10% organs — without plant material.
Neither approach has strong evidence demonstrating clear superiority. The key variable is whether the diet is nutritionally complete, which depends on execution more than philosophy.
Dogs vs. Cats on Raw Diets
Dogs and cats have different baseline requirements and tolerances.
Dogs are omnivores with more dietary flexibility. They can digest moderate amounts of carbohydrate and plant material effectively. Raw diets for dogs can include more variety without metabolic strain.
Cats are obligate carnivores with specific nutrient requirements that raw diets must meet precisely: taurine (found in heart tissue especially), arachidonic acid, preformed vitamin A, niacin, and arginine, among others. A raw cat diet that includes organ meat — particularly heart and liver — is much more likely to cover these needs than a muscle-meat-only approach. This is where cat raw feeding requires particular care. The margin for error is smaller.
What I Tell Clients Who Want to Try Raw
- Start with commercial raw rather than homemade, at least initially.
- If you move to homemade, get professional nutritional review — not a forum recipe, an actual veterinary nutritionist.
- Practice food-safe handling: dedicated cutting boards, thorough handwashing, separate storage.
- Have baseline bloodwork done, then repeat at 6 months on the new diet.
- Learn to body condition score your pet and check monthly.
- Be honest about whether the hygiene demands fit your household's reality.
Raw feeding is not a set-it-and-forget-it diet. It requires ongoing attention to nutritional balance in a way that commercial complete diets do not. That's not a reason not to do it — plenty of owners manage it successfully. But going in with realistic expectations matters.
How to start a raw diet safely for your dog and the nutritional ratios and common formulation mistakes cover the practical details of implementation.
When Raw Feeding Is Not Appropriate
Certain situations make raw feeding significantly riskier:
- Immunocompromised pets (those on immunosuppressants, undergoing chemotherapy, with certain chronic diseases)
- Households with immunocompromised humans, infants, or elderly individuals
- Owners who cannot realistically maintain food safety protocols
In these cases, the bacterial contamination risk is serious enough that I'd recommend against raw feeding regardless of the potential benefits.
Understanding Raw Diet Costs
Raw feeding is almost always more expensive than kibble, and often more expensive than premium commercial wet food. How much more depends on what you're sourcing and how.
For commercial complete raw, budget roughly 2–4 times the cost of a comparable-quality dry food on a per-calorie basis. Freeze-dried raw is even more expensive by weight, though it's lighter and more convenient. The premium exists because raw meat ingredients cost more, the supply chain is more complex, and processing volumes are much lower than for kibble.
DIY raw can be cheaper than commercial raw if you have access to affordable whole ingredients — direct farm sourcing, meat from butchers' offcuts, whole frozen chickens rather than pre-portioned cuts. Some owners source organ meats cheaply from local butchers or ethnic grocers. That said, the "cheaper homemade" calculation often doesn't include the value of the owner's time, the cost of proper freezer storage, or the cost of professional nutritional review.
The cost calculation isn't just about money, though. It's about whether the financial commitment is sustainable long-term. A raw diet that gets abandoned six months in because it's too expensive or too demanding leaves the pet worse off for the transition stress.
The Freeze-Dried and Dehydrated Middle Ground
A lot of people aren't fully committed to fresh raw but want the benefits of less-processed food. Freeze-dried and dehydrated raw options have grown significantly as a category and offer some practical advantages.
Freeze-drying removes moisture at low temperatures, leaving most nutrients intact. The resulting product is shelf-stable, lightweight, and travels well. When rehydrated with water, it approximates the texture and nutritional profile of fresh raw. The freeze-drying process also reduces (though doesn't eliminate) bacterial loads.
Dehydrated raw is similar but uses slightly higher temperatures — somewhere between freeze-drying and light cooking. It retains most nutrients but may lose slightly more heat-sensitive vitamins.
Neither process is perfect. But for owners who want a stepping stone between kibble and fresh raw, or who need a more practical option for travel or inconsistent access to fresh food, these formats are worth knowing about.
Transitioning Between Raw Formats
Many raw feeders don't stick with one format permanently. The pathway I see most often in my practice: start with commercial complete raw (easiest, safest introduction), transition to a commercial premix with added meat, and eventually some move toward fully homemade with nutritionist guidance.
The key principle is the same at every step: don't change formats and ingredients simultaneously. If you're switching from one commercial raw to another, do it gradually. If you're moving from commercial to homemade, give yourself a month where you're running both approaches in parallel before fully switching.
Monitoring a Raw-Fed Pet: What to Watch
This is the section I wish more raw feeding advocates discussed more prominently.
Coat and energy level are the most visible proxies for nutritional adequacy, but they're lagging indicators. A dog or cat can have good coat and energy while a nutritional deficiency is building silently for months. This is particularly true for:
Taurine — deficiency develops over months to years and is asymptomatic until heart or retinal changes are detectable. Whole blood taurine level testing is the appropriate screen. This is particularly relevant for raw-fed cats, who synthesize very little taurine endogenously and must obtain it from their diet, and for dogs where certain low-taurine formulations have been linked to dilated cardiomyopathy.
Calcium-phosphorus balance — skeletal problems from calcium deficiency build over months. X-rays can detect early bone density changes, but by the time limping appears, you're well past the early stage.
Vitamin A levels — both deficiency and toxicity are possible. Vitamin A is fat-soluble and accumulates; excessive liver intake over months can cause hypervitaminosis A.
Kidney function — high-protein diets are appropriate for healthy cats and dogs, but if there's underlying kidney compromise, protein load management becomes relevant. Annual bloodwork is the screen.
I recommend baseline bloodwork before starting raw, repeat at 3–6 months, then annually if the diet is stable and the pet is healthy. This isn't paranoia — it's the same monitoring I'd recommend for any significant dietary change.
A Note on Antibiotic Resistance
This is a concern that doesn't get enough attention in the raw feeding community. Raw meat can harbor antibiotic-resistant bacteria — bacteria that have developed resistance to antibiotics used in livestock production. A 2017 Dutch study isolated ESBL-producing E. coli from 78% of raw pet food samples tested, versus none of the non-raw samples. Whether those exact resistant strains transfer to and persist in the humans in the household is not as well established — the evidence for that specific step is thinner than the raw-food contamination finding itself. These organisms can be transferred to humans through the same pathways as other bacterial contamination.
The public health implications of antibiotic-resistant bacteria are significant, and raw pet food as a vector is an active area of research. It's another reason why food safety protocols aren't optional, and another consideration for households with medically vulnerable members.
FAQ
Is raw food better than kibble?
Neither is categorically better. A well-formulated raw diet and a high-quality complete kibble can both support excellent long-term health. What matters is whether the diet is nutritionally complete, appropriate for the individual animal's health needs, and safely handled. The choice depends on your pet's specific situation, your household's risk profile, and honestly, your lifestyle — raw feeding demands more time and care than commercial food.
Can raw diets cause food poisoning in humans?
Yes, this is a real risk. Raw pet food contains the same pathogens as raw human food — Salmonella, Listeria, E. coli — and can be transferred to humans through handling and through contact with the pet. Good handwashing, separate preparation surfaces, and prompt refrigeration of leftovers are non-negotiable when feeding raw.
Do raw diets improve coat quality?
Some owners report significant improvement, and there are plausible mechanisms — higher fat content, better fatty acid profile, improved protein digestibility. But controlled evidence is limited, and coat quality is affected by many variables including genetics, hydration, and overall health. It's not guaranteed.
My vet is against raw feeding. Should I be worried?
Most mainstream veterinary organizations recommend against raw diets primarily because of the bacterial contamination risk and the nutritional imbalance problem in homemade versions. These are legitimate concerns. If you want to feed raw, have an honest conversation with your vet about risk management rather than dismissing their concern. And if you're set on raw, the commercial rather than DIY route will address most of the nutritional concerns they're raising.