What was recalled
This page synthesizes the structural co-manufactured pet food quality control framework in the US market. The framework is not a recall event in itself but provides the structural context within which specific recall events (Diamond 2012, Mid-America 2023, Menu Foods 2007, others) occur. The major US dry-kibble co-manufacturer landscape as of the 2024 reference point includes: (i) Diamond Pet Foods — estimated ~25-30% of US dry kibble co-manufacturing volume across both branded and private-label production, three primary plants (Meta MO, Gaston SC, Lathrop CA); (ii) CJ Foods — major dry kibble co-manufacturer, multiple plants, customers include various specialty brands; (iii) American Nutrition Inc. — mid-sized dry kibble co-manufacturer, Ogden Utah and additional facilities, customers include private-label and specialty brands; (iv) Tuffy’s Pet Foods — family-owned dry kibble co-manufacturer in Perham Minnesota, customers include various retail and specialty brands; (v) Mid-America Pet Food — mid-sized dry kibble co-manufacturer based in Mount Pleasant Texas, subject of 2023 Salmonella recall affecting multiple downstream brands; (vi) OhioPet / Ohio Pet Foods — smaller dry kibble co-manufacturer; (vii) additional small specialty co-manufacturers serving niche brand customers. The major US wet-pet-food co-manufacturer landscape includes Simmons Pet Food as the dominant private-label producer plus owned plants operated by Hill’s, Royal Canin (Mars), Purina (Nestlé), J.M. Smucker (Big Heart Pet Brands legacy), and specialty wet co-manufacturers including Performance Pet Products and others.
The quality control infrastructure at major co-manufacturers includes: (i) incoming ingredient testing for moisture, fat, protein, ash, fiber, contaminants (heavy metals, mycotoxins, pesticide residues at the specification-required tier), and microbiology (Salmonella, E. coli, Listeria, total plate count); (ii) in-process monitoring of extrusion temperature, kibble moisture, cooling efficiency, coating application, and packaging integrity; (iii) finished-product release testing for proximate analysis (matching guaranteed analysis), key vitamins and minerals (against AAFCO nutrient profiles for the relevant life stage), and microbiology release criteria; (iv) sanitation protocols for line changeovers including allergen-management procedures between non-allergen and allergen-containing recipes; (v) recall investigation and traceback infrastructure including lot-coding, ingredient lot tracking, and customer notification systems. The infrastructure varies substantially across co-manufacturers based on plant age, customer requirements (Costco and other premium private-label customers typically specify higher-than-minimum QC tiers), and FDA inspection history.
The consumer-facing brand tier typically operates at a different layer: (i) recipe formulation specification (the brand specifies the ingredient list and target nutrient profile; the co-manufacturer matches the formulation in production); (ii) marketing, packaging design, and brand positioning; (iii) customer service and recall communications at the consumer tier; (iv) some brands conduct additional second-party audits of co-manufacturer plants or specify additional QC testing tiers; (v) brand-level quality assurance staff who liaise with co-manufacturer QC staff. The split between brand-tier formulation and co-manufacturer-tier production execution is structurally similar to the food industry more broadly — most consumer packaged goods follow a similar pattern — but the pet food industry concentrates production more heavily at a small number of co-manufacturers compared to many other CPG categories.
Why it was recalled
The structural concerns have three layers. Layer one — QC infrastructure varies across co-manufacturers and across plants within a co-manufacturer: the floor specified by FDA cGMP for animal food (21 CFR Part 507) is a minimum baseline that all manufacturers must meet. Plants serving premium private-label customers (Costco, premium specialty brands) typically operate above the cGMP floor with additional incoming ingredient testing, finished-product release testing, and process control. Plants serving lower-tier private-label customers may operate closer to the cGMP floor. The variation is generally not visible at the consumer-facing brand tier. Consumer-facing trust signals (brand reputation, retailer trust) do not reliably predict the QC tier of the underlying co-manufacturer.
Layer two — ingredient sourcing concentrates similarly to manufacturing: the major US pet food ingredient suppliers (rendered meat meals, grains, vitamins/minerals, fats, plant proteins) are themselves concentrated into a small number of major suppliers. A vitamin premix supplier serving multiple co-manufacturers concentrates ingredient-level risk across multiple downstream manufacturers; a corn supplier serving multiple co-manufacturers concentrates aflatoxin risk; a rendered protein supplier serving multiple co-manufacturers concentrates protein-source-related risk (pentobarbital, melamine-historical, novel-protein-cross-contamination). The 2007 melamine event surfaced this layer of concentration when a single contaminated wheat-gluten ingredient affected dozens of downstream wet pet food products across multiple co-manufacturers. The structural pattern persists in current ingredient sourcing.
Layer three — FDA inspection cadence and intensity varies across co-manufacturers: the FDA conducts routine inspections of registered pet food facilities under the FSMA framework, with frequency tied to risk-tier classification (higher-risk facilities inspected more often). Inspection findings are documented in Form 483 observations; severe findings can escalate to warning letters or, in extreme cases, plant closure or recall. The 2023 Mid-America Pet Food event involved a Form 483 to warning letter to recall progression (see Mid-America 2024 FDA warning letter); similar progressions have occurred at other plants. FDA inspection findings are publicly accessible through FOIA requests but are not consumer-facing at point of purchase. The framework is covered in additional depth at our FDA-CVM Form 483 inspection framework and FDA-CVM warning letter framework pages.
Health risks for your pet
The structural co-manufacturing concentration does not directly cause health risks — it is a production-structure framework, not an ingredient or process step. The framework matters because it distributes recall-event impact across multiple downstream brands when a manufacturer-level event occurs, and because it concentrates supply chain risk in a way that consumer-facing brand diversification does not address. Specific health risks emerge through the documented manufacturer-level recall events: the 2012 Diamond Salmonella event (49 human Salmonellosis cases across 20 states linked to handling contaminated kibble), the 2005 Diamond aflatoxin event (dog illness and death across multiple states), the 2023 Mid-America Salmonella event (multiple human Salmonellosis cases), the 2007 Menu Foods melamine event (acute renal failure in dogs and cats across the US and Canada).
The health-outcome framework for individual pet owners is: (i) most pet food consumed in the US is produced at one of a small number of major co-manufacturers; (ii) most pet food is safe at the per-feeding tier and the major contamination events are rare per-feeding; (iii) when a contamination event does occur, it typically affects multiple downstream brands and exposes more pets than a single-brand event would; (iv) consumer-facing brand choice does not provide as much supply chain diversification as it appears to; (v) format diversification (dry kibble, wet pet food, freeze-dried, fresh) and manufacturer diversification (rotating across brands produced at different plants) provide more actual supply chain diversification than brand diversification alone.
What to do if you bought affected product
Pet owners interested in navigating the co-manufactured pet food framework can take several practical approaches: (1) understand that most US pet food is produced at a small number of major co-manufacturers — Diamond, Simmons, CJ Foods, American Nutrition, Tuffy’s, Mid-America Pet Food, OhioPet, and additional smaller specialty co-manufacturers; rotating across brands produced at the same plant does not diversify supply chain risk; (2) identify the actual manufacturer behind your pet’s food — FDA recall press releases surface manufacturer identities; brand customer service typically discloses manufacturer information upon direct request; industry trade publications cover the major co-manufacturing relationships; (3) diversify across manufacturers rather than across brands at the same manufacturer — rotating between a Diamond-produced brand (Kirkland Signature, 4Health, Diamond Naturals) and a Champion Pet Foods owned-plant brand (Orijen, Acana) provides actual supply chain diversification; rotating between Kirkland Signature and 4Health does not; (4) recognize that owned-plant production is generally more transparent than co-manufactured production — brands operating their own plants (Champion, Hill’s, Royal Canin, Purina, some others) have direct control over QC infrastructure and supply chain; co-manufactured brands depend on the co-manufacturer’s QC infrastructure; (5) monitor FDA recall press releases at the manufacturer level — not just at the brand level; a Diamond plant event will surface across multiple downstream brands; tracking only one brand misses the scope; (6) weigh the price advantage of co-manufactured private labels against the supply chain risk — private label is substantially cheaper than equivalent-rubric branded products; the tradeoff is shared supply chain exposure; the choice depends on individual price-sensitivity and risk-tolerance balance; (7) support brand-level transparency on manufacturing relationships — brands that disclose manufacturer identity, plant locations, and co-manufacturing relationships are more trust-aligned than brands that obscure them; choosing transparent brands when available rewards the transparency norm.
How this affects KibbleIQ’s grade
The KibbleIQ rubric v15 evaluates pet food based on ingredient quality, nutrient profile, and processing approach per our published methodology. The co-manufacturing framework does not directly affect rubric grades (which are formulation-tier evaluations) but is materially relevant to the broader supply chain trust framework. Future rubric extensions under consideration: a "manufacturer transparency" scoring axis rewarding brands that disclose co-manufacturing relationships and plant locations; a "recall-history" deduction applicable at the manufacturer tier rather than the brand tier; an "owned-plant vs co-manufactured" trust signal incorporated into the broader brand reputation scoring. The framework is covered across our Diamond co-manufacturing pattern, Simmons co-manufacturing pattern, private-label pet food controversy, and pet food brand-versus-manufacturer transparency pages.