The food-safety risks of raw feeding: what the agencies document
Raw feeding carries documented food-safety risks: bacterial contamination (Salmonella, Listeria, Campylobacter, E. coli), parasites, antibiotic resistance and bone-related injuries. Raw meats test positive far more often than processed foods, about 8% for Salmonella and 16% for Listeria against under 0.5% (FDA, 2010-2012). The risk is real without being automatic, and it depends heavily on hygiene and on the source of the meat. This guide maps the hazards and the measures that reduce them.
Last updated :General documentary information. For an individual animal, a veterinarian's advice takes precedence over any online content.
Last updated: 2026-06-15
On this page (food safety)
- What are the documented health risks of raw feeding?
- Does raw feeding put the household at risk?
- Do raw-fed dogs shed bacteria in their stools?
- Is raw inadvisable with a baby or an immunocompromised person?
- Does freezing the meat make raw safe?
- The risks at a glance
- Does mixing kibble with raw cancel the bacterial risk?
- How do I start raw feeding as safely as possible?
What are the documented health risks of raw feeding?
Microbial contamination is the most documented danger of raw. An FDA study (Center for Veterinary Medicine, 2010-2012) tested 196 commercial raw samples: about 8% were Salmonella positive and 16% positive for Listeria monocytogenes, against under 0.5% in conventional foods. These agents can sicken an animal or turn it into an asymptomatic carrier.
Beyond bacteria, two further hazards are documented. Raw meat can carry parasites (Toxoplasma, Echinococcus, Trichinella) if it has not been frozen correctly, and a Journal of Antimicrobial Chemotherapy study (PMC, 2019) recorded antibiotic-resistant Enterobacteriaceae in raw foods, a public-health concern that reaches beyond the animal. The mechanical risk completes the picture: raw meaty bones, promoted as a dental asset and usually held near 10% of the ration, are also recorded by the WSAVA for dental fractures, perforations, constipation and digestive obstruction. Cooked bones are more brittle and must be avoided, as they splinter into sharp fragments. The dental upside does not always offset a surgical emergency.
These hazards differ in one important way: some can be lowered by handling, others cannot be removed at home. The bacterial load is regulated, with the FDA applying a zero-tolerance standard for Salmonella in pet food and treating contamination as grounds for recall, which is why commercial positivity rates of about 8% are not a tolerated background level but a flagged failure (FDA, 2010-2012). Antibiotic resistance is harder still, because no kitchen step reverses it once it is present in the meat. The practical reading is that source and traceability sit upstream of every household precaution: a controlled, treated supply narrows the bacterial and resistance risk before hygiene even begins, whereas an untraced one leaves the owner managing a hazard that handling alone cannot fully contain.
Does raw feeding put the household at risk?
Handling raw food exposes the household to zoonotic bacteria (Salmonella, Listeria, Campylobacter, E. coli). The hazard falls mainly on children, pregnant women, older adults and immunocompromised people. Contamination travels through the food, surfaces, bowls and the animal itself, not only through the meat on the chopping board.
Human risk is a central argument for the health agencies: the AVMA discourages raw or undercooked animal protein because of the danger to human and animal health, with commercial raw meats testing up to 16% positive for Listeria monocytogenes (FDA, 2010-2012). Transmission follows surfaces, bowls, the fridge and hands. An often-missed fact is that a raw-fed animal can shed bacteria in stool and saliva for several days, a source of contamination even with no symptom (WSAVA). ANSES and the AVMA stress the vulnerable profiles, for whom a Salmonella or Listeria infection can be serious, while about 8% of commercial raw foods are Salmonella positive (FDA). The FDA also notes that freezing does not kill bacteria, contrary to a stubborn belief; it only halts their multiplication.
Do raw-fed dogs shed bacteria in their stools?
Yes: a raw-fed dog can shed zoonotic bacteria (Salmonella, Campylobacter) in stool and saliva, sometimes with no symptom. This asymptomatic carriage, documented by the WSAVA, extends the household's exposure for several days after a meal and makes the risk harder to detect.
The bowl is not the only source; the animal becomes one too, while these raw foods test about 8% Salmonella positive against under 0.5% for processed foods (FDA, 2010-2012). Saliva and face or hand licking are a transmission route, not only the stools, which is why the FDA advises a 20-second soap handwash after contact. For a home with an infant or an immunocompromised person, that direct contact raises exposure. Stool pickup, bowl cleaning and handwashing therefore become critical control points, and freezing the meat does not neutralise the carriage, since it does not kill bacteria (FDA). The share of risk shifts from the food to the domestic environment, widening the circle of precautions.
Is raw inadvisable with a baby or an immunocompromised person?
Health agencies particularly advise against raw in homes with an infant, an older adult, a pregnant woman or an immunocompromised person. For these profiles, a Salmonella or Listeria infection can be serious, and about 8% of commercial raw foods are Salmonella positive (FDA, 2010-2012). The AVMA and ANSES recommend weighing this risk with a professional.
These groups have weaker defences against bacterial infection, and in pregnancy the cat is a key host of Toxoplasma gondii, which can affect the foetus. The risk comes not only from handling the meat but from the animal's asymptomatic carriage, so face licking of an infant becomes a direct route, with these raw foods running up to 16% Listeria positivity (FDA). The agencies do not issue a ban but a reinforced warning: the AVMA, whose policy was updated in January 2024, recommends discussing the choice with a vet, and if needed a doctor, before adopting raw in a sensitive household. Professional-kitchen hygiene reduces exposure without removing it.
Does freezing the meat make raw safe?
Deep freezing reduces some parasites (Toxoplasma, Trichinella) but does not kill bacteria such as Salmonella or Listeria (FDA). It is therefore a partial measure, to combine with hygiene and a controlled source, not a guarantee of safety.
Deep cold reduces the infectivity of several parasites: for Trichinella in pork under 15 cm thick, the FSIS (USDA) cites freezing at minus 18°C for about 20 to 30 days; for Toxoplasma gondii, a few days at minus 12°C or minus 18°C strongly reduce the cysts (CDC). The durations depend on temperature and thickness. The counter-intuitive part is what freezing does not do: it halts bacterial multiplication but does not kill the bacteria, so once back above 0°C, Salmonella, Listeria and E. coli become active again. For the bacterial risk, only core cooking, beyond about 70°C, or high-pressure pasteurisation deliver a reliable reduction, not the cold.
The risks at a glance
The hazards differ in agent, severity and the measures that reduce them. The table sets the documented risks against their realistic mitigations.
| Risk | Agent or cause | Possible reduction | Removes the risk? |
|---|---|---|---|
| Bacterial infection | Salmonella, Listeria, E. coli | Controlled source, strict hygiene | No, reduces only |
| Parasitic infection | Toxoplasma, Echinococcus, Trichinella | Deep freezing (time and temperature) | Partial |
| Antibiotic resistance | Resistant Enterobacteriaceae | Traceable sources | Partial |
| Household transmission | Carriage, saliva, surfaces | Handwashing, dedicated surfaces | No, reduces only |
| Mechanical injury | Bone (fracture, obstruction) | Avoid cooked bone, supervise, size to frame | Partial |
Does mixing kibble with raw cancel the bacterial risk?
No: mixing kibble with raw meat does not neutralise the bacteria in the raw portion, and the idea that kibble would sanitise raw has no basis. The Salmonella or Listeria risk documented by the FDA (about 8% and 16% positivity, 2010-2012) applies to the raw portion independently of the rest of the bowl.
Combination feeding, pairing kibble with raw, home-cooked or wet food, is common, and the bacterial risk is often misunderstood within it. Serving the two at separate meals, kibble in the morning and raw at night, changes nothing: separation neither neutralises the bacteria nor improves digestion, and the claim that raw and kibble digest at incompatible speeds is not backed by solid evidence (Tufts Petfoodology, 2025). The documented stakes of mixing are therefore the microbiological risk of the raw portion, which calls for the same hygiene as any raw meal, and calorie control, since stacking two sources easily exceeds the energy need, with overweight affecting more than 40% of dogs and cats in veterinary surveys. Mixing is reasoned in total ration and calories, not by assuming one format protects against the other.
How do I start raw feeding as safely as possible?
Starting raw while limiting risk means a formulation by a veterinary nutritionist, a traced source, a gradual transition over 7 to 10 days, strict hygiene and monitoring. The majority bodies do not recommend raw; these precautions reduce the risk without removing it.
The first priority is a formulated, complete ration, since 95% of homemade rations are deficient in at least one nutrient (UC Davis, 2013); this step covers calcium, taurine for the cat, trace elements and the calcium-to-phosphorus ratio. A gradual transition over 7 to 10 days limits digestive upset, and a traced source, ideally treated by high-pressure pasteurisation, lowers the microbiological risk. Handling raw then demands professional-kitchen hygiene: dedicated surfaces, a 20-second handwash, a cold chain and prompt disposal of leftovers (FDA, WSAVA). Veterinary monitoring with weighing and body-condition checks allows the ration to be adjusted, and in a home with a vulnerable person the decision is discussed beforehand with a professional.
The order of these steps is not arbitrary. Formulation and source come first because they act on the hazards that household hygiene cannot reach, namely nutritional completeness and the bacterial load of the meat itself; hygiene and monitoring come second because they contain the residual risk that remains after a good ration and a clean supply. Skipping the first two and relying only on careful handling leaves the largest hazards untouched, which is the common pattern behind both the deficiencies recorded by UC Davis (2013) and the contamination measured by the FDA (2010-2012). Petipedia sets out these precautions while recalling that the majority bodies do not recommend raw, and that the measures reduce the risk rather than remove it.
Related reading (food safety)
- What are the documented health risks of raw feeding for dogs and cats?
- Does raw feeding put my family at risk of salmonella or listeria?
- Should meat be frozen before BARF feeding to limit parasites?
- Glossary: Salmonella, Listeria
- Hub: Raw, BARF and home-cooked diets
Sources: FDA, CVM study 2010-2012 and Get the Facts campaign; WSAVA, raw diets statement; Journal of Antimicrobial Chemotherapy, PMC 2019; AVMA, policy on raw animal protein, updated January 2024; ANSES, animal-feed health risks; FSIS (USDA), Trichinella Compliance Guideline; CDC, toxoplasmosis prevention; Stockman and Larsen, UC Davis 2013; Tufts Petfoodology 2025.