Study Finds Salmonella Links in Dogs and Raw Pet Food

New research shows genetic connections between bacteria in dogs, raw food, and human infections for households to consider.

Updated on Oct. 31, 2026 in Dogs

Flat opaque gouache-painted illustration of a stainless steel dog food bowl on a wooden kitchen floor, reflecting domestic pet-care safety. — A new long-term study has identified significant genetic links between Salmonella strains found in raw pet food, domestic dogs, and human household infections. AI Illustration. Upload story photo >

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A long-term study analyzing 1,223 Salmonella isolates collected between 2006 and 2024 has identified significant genetic links between bacteria found in dogs, raw pet food, and human clinical cases. The findings highlight a potential zoonotic risk in domestic settings where multi-drug resistant strains are present.

Why it matters

Understanding these bacterial overlaps is critical for pet owners who feed raw diets, as it clarifies how antimicrobial-resistant pathogens can move between their pets and the household. Researchers conducted this analysis to characterize the specific zoonotic pathways and resistance patterns involved.

The study utilized whole genome sequencing on 1,017 canine isolates and 206 raw pet food samples. Researchers identified 676 unique clusters across 29 different Salmonella serovars, with Salmonella Typhimurium identified as the most frequent strain.

The details

Researchers performed comparative genomic analysis on the isolates to track the evolution and movement of bacteria. The study indicates that multi-drug resistant strains are circulating within raw pet food products and the canine population. This sharing of genetic markers suggests that common serovars can be transmitted between pets and humans within the same household environment.

2006-2024: Salmonella isolates were collected and analyzed for the research.

The Home Front

This research follows a growing pattern of public health scrutiny regarding pet-to-human disease transmission through diet-related vectors. It echoes findings from the 2018 Cyclospora outbreak linked to McDonald's salads, illustrating how contamination paths in food chains create risks for domestic households.

Pet owners should discuss the safety of raw food diets with their veterinarian to understand the risks of antimicrobial resistance. Regularly washing hands after handling pet food or cleaning up after your dog is an essential step in maintaining household hygiene.

The takeaway

The study suggests that multi-drug resistant Salmonella can circulate between raw pet food, dogs, and humans. Pet owners should prioritize safe handling protocols and consult a veterinarian about the potential health implications of raw feeding.