Battle Creek Vet Examines Copper Levels in Dog Food

A longtime Battle Creek veterinarian is asking dog owners to pay closer attention to copper in commercial dog food and treats.

Dr. Pete VanVranken, founder of Dickman Road Veterinary Clinic, has practiced locally for more than 50 years and helped author two recent studies, as described in the original WWMT report.

Copper is an essential nutrient, but excessive amounts may build up in a dog’s liver and contribute to inflammation, scarring and serious liver disease.

VanVranken began studying the issue after losing a family pet to what he believed was copper storage disease.

The research compared liver copper levels in dogs eating commercial diets and also examined the relationship between dietary copper and copper stored in the liver.

One study reported significantly higher liver copper concentrations in domesticated dogs than in wild coyotes, while another study found that dogs fed higher-copper diets stored more copper in their livers.

The researchers also reported that dogs on lower-copper diets did not show signs of copper deficiency during the study period.

That does not mean every commercial dog food is unsafe or that pet owners should change diets without professional guidance.

It does raise questions about labeling because current nutritional standards establish minimum copper levels for dog food but do not set a maximum.

VanVranken says some breeds, including Doberman Pinschers, Labrador Retrievers, West Highland White Terriers and Dalmatians, may be more vulnerable, although copper storage disease can affect other dogs too.

Liver-based treats may also add substantial copper, even when a dog’s regular food is lower in copper.

Local pet owners who are concerned should start with their veterinarian rather than making a sudden food change.

Owners can also contact the food manufacturer using the number on the package and ask for the product’s copper level on a dry-matter basis.

Routine bloodwork may identify changes in liver enzymes, but diagnosing copper storage disease can require additional testing and, in some cases, a liver biopsy.

Common Questions for Dog Owners

Should I stop feeding my dog’s current food?

No sudden change is recommended based on a news report alone, so discuss your dog’s diet, breed, health history and treats with your veterinarian.

Where can I find the copper level in dog food?

It may not appear on the package, but the manufacturer should be able to provide nutritional information when contacted directly.

What signs should concern me?

Liver problems may not cause obvious symptoms early, which is why regular veterinary examinations and appropriate bloodwork matter.

The practical takeaway is simple: check the food, remember the treats and make decisions with a veterinarian who knows your dog.

Read the original local report, review the veterinary research and its companion study, and learn more about the Battle Creek clinic.