What was recalled
The June 2020 CFIA recall covered multiple lots of Carnivora Fresh Frozen Patties for dogs and cats, manufactured by Riverside Farm Ltd. at the Saskatoon, Saskatchewan production facility. The affected products spanned multiple protein varieties including beef-based raw patty formats. Distribution was nationwide across Canada through specialty pet food retail, with cross-border export to portions of the United States via Canadian-US pet food retail distribution channels. The recall was published at CFIA’s Recalls and Safety Alerts archive.
The trigger was CFIA routine sampling at retail that detected E. coli O157 in finished product. Unlike E. coli generally (which exists as commensal flora in mammalian intestines and is not pathogenic in most strains), E. coli O157 is a serotype carrying Shiga toxin genes (stx1, stx2) that produce severe disease in humans — bloody diarrhea, hemorrhagic colitis, and in 5-10% of children, hemolytic uremic syndrome (HUS) with acute kidney failure. The CFIA-CDC-FDA inter-agency coordination on E. coli O157 in food applies the same evidentiary threshold to pet food as to human food because of the zoonotic-handling risk pathway.
Why it was recalled
Raw pet food carries inherent pathogen exposure risk; the format lacks the high-temperature kill step that dry kibble extrusion provides. Carnivora’s production model used raw ingredient sourcing without a post-production kill step (no HPP, no cooking), relying instead on supplier qualification and environmental monitoring to manage microbial load. E. coli O157 enters the food supply primarily through contamination at the cattle hide-to-carcass transition during slaughter; the bacterium colonizes ruminant gastrointestinal tracts asymptomatically and can transfer to meat surfaces during processing. The 2020 Carnivora detection most likely traces to a raw beef ingredient stream that carried E. coli O157 from a slaughter source, then passed through Carnivora’s production without being eliminated.
The Canadian and US regulatory frameworks treat E. coli O157 in pet food as a high-priority recall trigger because of the documented human-handling risk pathway. Even without confirmed pet or human illnesses, the historical disease severity of E. coli O157 (multi-state human outbreaks have killed children in past decades) justifies aggressive recall scope. The Carnivora case is one of several CFIA-led raw pet food recalls in the 2018-2022 window that demonstrated regulatory parity between Canadian and US pet food enforcement during cross-border distribution events.
Health risks for your pet
No confirmed pet or human illnesses were reported in connection with the 2020 Carnivora recall. The detection was driven by routine CFIA sampling rather than illness complaints. E. coli O157 health risks in dogs and cats include acute gastroenteritis with bloody diarrhea, vomiting, fever, and lethargy. Pets can shed E. coli O157 in stool for weeks after clinical recovery, exposing owners through litter-box and stool-cleanup contact. In humans, E. coli O157 is a serious foodborne pathogen: typical human illness presents as bloody diarrhea (hemorrhagic colitis), abdominal cramping, and fever; 5-10% of pediatric cases progress to hemolytic uremic syndrome (HUS), a triad of microangiopathic hemolytic anemia, thrombocytopenia, and acute kidney injury that can be life-threatening and may produce permanent renal damage. Pregnant women, the elderly, and immunocompromised adults face elevated severe-disease risk. The CDC’s E. coli information resource documents the clinical course.
What to do if you bought affected product
The 2020 Carnivora recall is closed. If you have any Carnivora Fresh Frozen Patties remaining from the 2020 production window, dispose of the product securely. Wash food bowls, prep surfaces, and hands with hot soapy water; E. coli O157 is inactivated by standard household disinfectants and heat above 70°C. Pet owners feeding any raw pet food should follow strict handling-hygiene protocols: separate cutting boards and utensils for raw pet food, immediate handwashing after handling, no cross-contamination with human food prep surfaces, and avoid raw pet food handling by pregnant women, infants, and immunocompromised household members. If your dog or cat ate Carnivora product during the recall window and developed bloody diarrhea or severe lethargy, contact your veterinarian. If a child in your household developed bloody diarrhea with no clear cause, contact your physician and disclose raw pet food exposure history.
How this affects KibbleIQ’s grade
Carnivora is not in the KibbleIQ scored database — our methodology v15 covers commercial dry kibble, fresh cooked food, and selected raw-coated kibble per our published methodology; standalone raw frozen is a distinct format that the rubric does not yet specifically score. The 2020 event was a single-lot pathogen-detection driven by routine CFIA sampling; the company responded with a voluntary recall through standard CFIA recall channels, which is a quality-systems credit relative to manufacturers that declined recalls during the same era. Recall-history scoring under our planned methodology v2 will treat single-event detections with prompt voluntary recall response qualitatively differently from cascading multi-month patterns indicating environmental harborage (Radagast 2018) or company declination of FDA recall requests (Darwin’s 2025, Raaw Energy 2026).