What was recalled
This page synthesizes the H5N1 kill-step framework across commercial pet food processing formats. The H5N1 highly-pathogenic avian influenza virus is sensitive to heat treatment — published thermal inactivation data indicates 60°C for 30 seconds typically inactivates the virus in muscle tissue, 70°C for instantaneous exposure provides reliable inactivation, and 100°C for 5 seconds inactivates with broad safety margin. Commercial pet food processing formats provide thermal exposure substantially exceeding these inactivation requirements for heat-processed categories, but raw and freeze-dried categories without pre-treatment kill-step do not provide reliable H5N1 control.
The kibble extrusion process is the dominant commercial pet food production format. Extrusion operates at 80-130°C barrel temperature with 1-3 minute residence time and additional drying at 60-90°C for 10-30 minutes. The combined thermal exposure provides substantial H5N1 inactivation margin. The extrusion process also produces shear stress, pressure drop, and moisture changes that contribute additional virus inactivation. Kibble pet food produced under standard commercial extrusion processing carries essentially zero residual H5N1 transmission risk from poultry-source ingredients. Canned pet food retort processing operates at 121°C minimum core temperature for 3 minutes per FDA-CVM 21 CFR 113 commercial sterility standards. The retort framework was designed for Clostridium botulinum spore inactivation (which requires substantially higher thermal exposure than viral inactivation), providing thermal exposure 100x or more excess relative to H5N1 inactivation requirement. Canned pet food carries essentially zero residual H5N1 transmission risk.
The baked pet food category operates at 90-100°C oven temperature for 20-40 minutes, producing reliable H5N1 inactivation. Air-dried and gently-cooked pet food categories operate at variable temperature profiles (40-70°C typical) that may or may not provide H5N1 inactivation depending on specific processing parameters — manufacturers should confirm processing temperature and time meet 60°C/30-second or equivalent inactivation thresholds. Freeze-dried pet food requires pre-treatment kill-step for H5N1 control; standard freeze-drying does not inactivate H5N1, but freeze-dried products produced from heat-treated, HPP-treated, or irradiation-treated raw materials provide reliable virus control. The kill-step framework is processing-pathway-specific and brand-level disclosure of processing temperature and time is essential for accurate H5N1 risk interpretation.
Why it was recalled
The structural concerns have three layers. Layer one — consumer-facing communication rarely surfaces kill-step framework: pet food brand marketing rarely discusses the thermal inactivation framework around H5N1 or other zoonotic viruses. Pet owners interpreting H5N1 outbreak news may have limited understanding of which pet food formats carry residual transmission risk and which formats provide reliable virus inactivation through standard processing. The framework is structurally protective for heat-processed pet food but the protection is not surfaced as a consumer-facing communication priority, leaving pet owners to make format selection decisions based on incomplete information.
Layer two — freeze-dried pre-treatment kill-step transparency varies across brands: freeze-dried pet food category includes substantial brand variation in pre-treatment kill-step approach. Some brands use HPP (high-pressure processing, typically 600 MPa for 3 minutes) before freeze-drying, providing reliable H5N1 inactivation. Other brands use brief heat treatment (sub-pasteurization temperatures) before freeze-drying, which may or may not provide reliable inactivation. Some brands use freeze-drying alone without pre-treatment, which does not provide H5N1 inactivation. Consumer-disclosure transparency around freeze-dried pet food kill-step approach is variable, leaving pet owners with insufficient information to evaluate H5N1 risk across brands in this category.
Layer three — gently-cooked and air-dried categories have variable thermal profiles: the gently-cooked and air-dried pet food categories operate at lower temperatures than kibble extrusion, baked, or retort processing, with processing temperature and time varying substantially across brands. Some gently-cooked formulations reach 65-70°C core temperature for adequate hold time (providing H5N1 inactivation); others operate at 40-55°C without adequate hold time (not providing reliable inactivation). The category occupies an intermediate position between raw (no kill-step) and traditional kibble/canned (substantial thermal exposure), with brand-level processing transparency essential for H5N1 risk interpretation. Consumer-disclosure transparency is variable.
Health risks for your pet
Heat-processed pet food (kibble, canned, retort, baked) carries essentially zero residual H5N1 transmission risk to pets or humans from poultry-source ingredients, due to substantial thermal exposure exceeding H5N1 inactivation requirements during standard processing. The framework provides reliable virus control through processing rather than through supply chain source restriction, which means pet food brands using poultry from H5N1-affected supply chains can produce safe heat-processed product through standard processing parameters. The kill-step framework is the dominant H5N1 risk management mechanism for commercial heat-processed pet food and operates effectively at the industry scale.
Format-specific residual risk concerns include: (i) raw and frozen-raw pet food without HPP, irradiation, or alternative inactivation step does not provide reliable H5N1 control — multiple recall events in 2024-2025 (Northwest Naturals, Wild Coast, Monarch, RAWR, Savage) document this; (ii) freeze-dried pet food without adequate pre-treatment kill-step carries residual H5N1 risk — freeze-drying alone does not inactivate H5N1, but freeze-dried products from HPP, heat-treated, or irradiation-treated raw materials provide reliable control; (iii) gently-cooked and air-dried pet food may or may not provide H5N1 inactivation depending on specific processing parameters — brand-level processing temperature and time disclosure is essential for risk interpretation; (iv) cross-contamination during processing or packaging — even heat-processed pet food could carry residual risk if cross-contamination occurs post-cook from raw materials in shared processing facilities; the industry generally manages this through facility segregation and HACCP-equivalent controls.
What to do if you bought affected product
Pet owners can interpret the H5N1 kill-step framework meaningfully through several practical approaches: (1) recognize that heat-processed pet food (kibble, canned, retort, baked) reliably inactivates H5N1 virus through standard processing temperatures — these formats carry essentially zero residual transmission risk from poultry-source ingredients; (2) for raw and frozen-raw pet food, verify the brand's H5N1 control approach — HPP-treated raw, irradiation-treated raw, or sourced from H5N1-free supply chain are the available control mechanisms; (3) for freeze-dried pet food, verify the pre-treatment kill-step approach — HPP-treated raw materials before freeze-drying, heat-treated raw materials before freeze-drying, or irradiation-treated raw materials before freeze-drying provide reliable H5N1 control; freeze-drying alone does not; (4) for gently-cooked and air-dried pet food, request processing temperature and time documentation from brand customer service — ask whether processing temperature exceeds 60°C for at least 30 seconds in product core; brands meeting this threshold provide reliable H5N1 inactivation; (5) during active H5N1 outbreak periods, weight format selection toward kibble, canned, retort, or baked products for poultry-source ingredients — the structural processing safety margin is substantial; (6) treat the kill-step framework as a key risk management lever for H5N1 specifically and for foodborne pathogens generally — raw pet food formulations face broader pathogen control challenges (Salmonella, Listeria, E. coli) that heat-processed formulations do not; (7) reference our H5N1 cross-species transmission and raw pet food H5N1 controversy pages for complementary regulatory and transmission-pathway context.
How this affects KibbleIQ’s grade
The KibbleIQ rubric v15 is structured around dry kibble scoring with cross-format overlays for raw/freeze-dried per our published methodology, implicitly weighting heat-processed pet food formats favorably for pathogen control (including H5N1 risk management). The rubric does not currently include processing-format-specific kill-step scoring at the brand level, but the dry rubric structure produces favorable scoring for heat-processed formats relative to raw formats in aggregate. Future rubric extension under consideration: brands disclosing processing temperature and time for non-traditional formats (gently-cooked, air-dried, freeze-dried with pre-treatment) would receive favorable scoring weight as transparency signal. The broader H5N1 pet food framework is covered across our H5N1 cross-species transmission, raw pet food H5N1 controversy, and per-brand recall pages. For now, our recommendation: trust heat-processed pet food (kibble, canned, retort, baked) for reliable H5N1 inactivation through standard processing, verify pre-treatment kill-step approach for freeze-dried and non-traditional formats, and prefer heat-processed formats during active H5N1 outbreak periods.