Copper-Storage Disease in Dogs
Canine Copper-Associated Hepatopathy – An Evidence-Based Approach
Updated with the latest developments 9/2025
*New!* Canine Copper-Associated Hepatopathy – Evidence-Based Approach member files added.
A Toxic Situation: We have a story that matters. So do you.
Canine Copper-Associated Hepatopathy (copper storage disease) is recognized with increasing frequency in dogs. While several breeds have been notably affected, the surge in CuAH cases now transcends traditional breed boundaries. Growing studies suggest dietary copper may play a critical—sometimes fatal—role due to industry changes in pet food.
Commercial Maintenance Dog Food Exceeds Tolerance for Numerous Healthy Dogs
Veterinary experts advocate re-examining dietary copper for dogs and reconsidering current guidelines for copper content in commercial dog foods.
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This Affects All Dogs
The mineral copper is essential. Multiple academic groups report that rising liver copper concentrations are unlikely to be explained by excretion alone; diet—independent of genetics in many cases—appears to be the key factor influencing hepatic accumulation.
“Copper-associated hepatopathy can be hard to diagnose, challenging to treat, but it is possible to alleviate.”
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Comprehensive Resources & Support
We curate the best resources for understanding and managing copper storage disease in dogs. Start here:
Core Nutrition References
- AAFCO Nutrient Requirements for Dogs (PDF)
- NRC 2006: Adult Dogs – Maintenance (PDF)
- NRC 2006: Puppies after Weaning (PDF)
- FEDIAF Nutritional Guidelines (PDF)
- Dog Body Condition Score (PDF)
- Fecal Scoring Chart (PDF)
Authoritative Orgs & Tools
- AAFCO: Understanding Pet Food
- AAVN – American Academy of Veterinary Nutrition
- Advances in Nutrition
- AKC Canine Health Foundation
- ACVIM
- UCD Amino Acid Lab
- BalanceIT (formulation) — Board-Certified Vet Nutritionists
- Calculation / Converter Tools
- Canadian Academy of Veterinary Nutrition
- Canadian Nutrient File
- Canine Inherited Disorders Database
- ConsumerLab
- USP Dietary Supplements Verification
- ESVCN
- FDA CFSAN • FDA CVM • USDA FDC • Recalls & Withdrawals
- Internal Medicine for Pet Parents
- Royal Canin Hepatic • Hill’s Liver Care
- NRC: Your Dog’s Nutritional Needs (PDF)
- NRC Dogs & Cats / SACN5
- Nutrition for Dogs with Liver Disease (PDF)
- PetDiets (consults)
- Petfoodology (Tufts)
- PubMed
- Report Animal Drug Side Effects
- WSAVA
Copper Storage Disease – Key Links
- ACVIM Consensus: Chronic Hepatitis in Dogs (PDF)
- FDA Virtual Listening Session (Video)
- Merck Vet Manual: Canine Chronic Hepatitis
- Copper Sulfate in Pet Food (Petfood Industry)
- How Can AAFCO Help? (Petfood Industry)
- FDA Grand Rounds: Copper in Dog Food
- FDA Listening Session Slides
- Cornell: Copper Overload in Dogs
- Regulators & Pet Food Claims
- WSAVA Liver Disease Guidelines
Selected Studies
- ATP7A/ATP7B & Hepatic Copper in Dobermans
- ATP7A, ATP7B, RETN in Labs (JAVMA)
- Canine Models for Copper Homeostasis
- COMMD1-Deficient Dogs & Hepatitis/Fibrosis
- Copper Metabolism & Canine Nutrition
- Rhodanine vs Wright-Giemsa for Copper (aspirates)
- Diet Restriction & Ageing in Dogs
- COMMD1 in Copper Toxicosis
- Hepatic Copper in 546 Dogs (1982–2015)
- Hepatic Copper in Labs ± Chronic Hepatitis
- Heritabilities of Copper Traits (Labs)
- New Copper Metabolism Gene (positional cloning)
- Reconsidering Copper in Commercial Diets
- Letter: Flaws in Hepatic Copper Study
- Notice of Retraction (JAVMA, 2024)
- Retracted: 16 Years of Hepatic Copper
- Retraction Watch Coverage
- Menkes & Wilson Genes in Labs
AAFCO Highlights
- AAFCO response to JAVMA Viewpoint (PDF)
- Expert Panel Report to PFC (PDF)
- Expert Panel upholds copper guidelines
- Copper Claim Workgroup Final Report (PDF)
- Compiled Copper Claim Comments (PDF)
- PFC votes on “Controlled Copper” claim
- AAFCO annual meeting focus (NGFA)
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