Bedlington Terrier Copper Accumulation: A Complete Guide to Symptoms, Screening, and Treatment for This Hereditary Liver Disease

Liver HealthBreed HealthMeongsiljang Veterinary Advisory Board

Bedlington Terriers are highly susceptible to a hereditary liver disease caused by copper accumulation due to a COMMD1 gene mutation. We’ve outlined key lifelong management strategies, including DNA testing, regular liver function monitoring, and a low-copper diet.

What Breed Is the Bedlington Terrier?

Bedlington Terriers are a medium-sized terrier breed particularly susceptible to a hereditary liver disease (copper accumulation) caused by a mutation in the COMMD1 gene, which leads to copper buildup in the liver. What’s truly important is early genetic testing and regular monitoring of liver function. Liver damage often progresses before clinical symptoms appear, so it’s essential to have a DNA test done right after adoption and to track liver enzyme levels such as ALT and ALP every 6 to 12 months starting from age one.

Common Conditions Requiring Lifelong Monitoring in Bedlington Terriers

There are four key conditions that Bedlington Terrier owners should be aware of.

Copper accumulation: This is a primary genetic disorder caused by a MURR/COMMD1 gene defect, leading to copper buildup in liver cells and progressing to chronic hepatitis and cirrhosis.

Asymptomatic elevation of liver enzymes: There is a prolonged asymptomatic phase in which ALT and AST levels rise before any clinical signs appear.

Acute hemolytic crisis: If accumulated copper is released all at once, it can destroy red blood cells, resulting in anemia, hemoglobinemia, and hemoglobinuria (dark urine).

Chronic hepatitis and cirrhosis: Prolonged copper accumulation causes fibrosis of liver tissue, eventually leading to cirrhosis.

What Causes Copper Accumulation?

Copper accumulation occurs when liver cells fail to properly excrete copper into the bile. Normally, copper is stored in the lysosomes of liver cells and then excreted into the bile—a process involving the MURR/COMMD1 gene. When this excretion pathway is impaired, even trace amounts of copper from food and water continue to build up in the liver. The accumulated copper damages liver cells, leading to a progressive sequence of chronic hepatitis, fibrosis, and ultimately cirrhosis. According to veterinary internal medicine textbooks, this condition is inherited as an autosomal recessive trait in Bedlington Terriers. Dogs that inherit the mutated gene from both parents develop the disease, while carriers with only one copy of the gene typically remain asymptomatic but can pass the mutation on to their offspring.

Illustration of the concept of copper accumulation in a dog's liver

Seek Veterinary Care Within 24 Hours If You Notice These Signs

If you notice any of the following signs, seek veterinary care within 24 hours: jaundice (yellowing of the gums and whites of the eyes), sudden loss of appetite, abdominal distension (ascites), repeated vomiting, worsening lethargy, and dark brown urine. An acute hemolytic hepatic crisis can cause a rapid and severe decline in condition over a short period.

How Are Bedlington Terrier Liver Disease Screenings Conducted?

We conduct health screenings along three main pillars.

Genetic (DNA) testing: We collect oral mucosal cells to check for the COMMD1 mutation. This test only needs to be done once in your pet’s lifetime.

Liver enzyme panel: We measure ALT, AST, ALP, and GGT levels. Monitoring every 6 to 12 months is recommended.

Liver biopsy: This is the standard diagnostic procedure for confirming the condition and quantifying copper levels in liver tissue. It requires anesthesia.

Your veterinarian will determine the appropriate testing schedule and types based on your pet’s age, symptoms, and DNA results.

Comparison of Screening Methods

Item	DNA test	Blood test	Liver biopsy
Information obtainable	Carrier/affected genotype	Degree of liver damage progression	Definitive diagnosis + copper quantification
Anesthesia required	Not required	Not required	Required
Recommended timing	Once right after adoption	Every 6–12 months after age 1	When values are abnormal or for definitive diagnosis
Amount of information	Basic	Follow-up monitoring	Diagnostic standard

The testing frequency and type are determined by the veterinarian based on your pet's condition

Treatment and Dietary Management

Treatment involves lifelong use of copper-chelating agents alongside a low-copper diet.

Low-copper prescription diet: Use prescription food that excludes organ meats such as liver and heart, and check the copper content in commercial treats.

Zinc supplementation: Reduces copper absorption in the intestines.

Copper chelators: Help excrete accumulated copper through urine.

Hepatoprotective supplements: Additional supplements such as SAMe and silymarin may be included.

Your veterinarian will determine the appropriate medication type and dosage based on your pet’s weight, liver values, and copper levels.

Bedlington Terrier Diet Management Image

Age-Specific Routine Care Schedule

Bedlington Terriers require lifelong monitoring of liver health. For dogs up to one year of age, we recommend DNA testing shortly after adoption and a first blood test at six months. From ages one to seven, check liver values and perform abdominal ultrasounds every six to twelve months; after age seven, do so every three to four months. Owners can also help by gently checking their dog’s gum color, appetite, and urine color daily.

Other Conditions to Monitor Alongside

In addition to copper accumulation, there are other health concerns Bedlington Terriers should be monitored for.

Ammonium urate uroliths: When liver function declines, urate-type uroliths may form. Regular urinalysis is recommended for early detection.

Acute hemolytic anemia: Excessive release of copper can destroy red blood cells, leading to anemia and hemoglobinuria. Monitor your dog’s gum color and urine color regularly.

Awareness of other predisposed breeds: Copper accumulation is not exclusive to Bedlington Terriers; West Highland White Terriers, Skye Terriers, Doberman Pinschers, and Labrador Retrievers are also at higher risk. If you own any of these breeds, consult your veterinarian about their individual risk levels.

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Veterinarian

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.

Frequently Asked Questions

The DNA test came back positive for the carrier status. Will the disease develop?

Copper accumulation is inherited in an autosomal recessive pattern, so carriers with only one copy of the mutated gene typically show no clinical signs. However, because they can pass the mutation to their offspring, genetic testing of the prospective mate is essential before breeding.

How can I check the copper content in pet food?

Prescription diets list their copper content (usually in mg/kg) on the label. For regular commercial foods, it’s safest to contact the manufacturer or use a veterinarian-recommended low-copper prescription diet. Avoid ingredients such as liver, heart, and shellfish.

Is a liver biopsy dangerous?

Although general anesthesia is required, ultrasound-guided needle biopsy is relatively safe. To minimize the risk of bleeding and infection, a coagulation test is performed beforehand. Your veterinarian will explain the risks and benefits in detail.

If detected early, what is the average life expectancy?

Early detection, combined with effective medication and dietary management, can significantly improve the prognosis. Since the outcome depends on the extent of liver damage, response to treatment, and underlying cause, it’s crucial to detect the condition through screening during the asymptomatic stage before clinical signs appear. Your veterinarian will provide a detailed explanation of the expected course and life expectancy based on your pet’s specific condition.

Do other terrier breeds need the same tests?

Copper accumulation is particularly common in Bedlington Terriers, but it has also been reported in breeds such as West Highland White Terriers and Skye Terriers. If you own a terrier, discuss the risk with your veterinarian.

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References

[1] Notes on Canine Internal Medicine, 4th Edition — Hepatocellular Disorders chapter

[2] Fundamentals of Veterinary Clinical Pathology, 3rd Edition — Liver Enzymes section

[3] van De Sluis B et al., Identification of a new copper metabolism gene by positional cloning in a purebred dog population, Human Molecular Genetics, 2002