Alarming Levels of Contaminants Found in Commercial Dog Foods

A recent investigation by the Colorado-based nonprofit Clean Label Project has revealed concerning levels of heavy metals and other contaminants in popular commercial dog foods. The study tested nearly 80 dog food products, including dry kibble, fresh, frozen, and air- and freeze-dried varieties. The findings indicate that many dog foods contain "dangerous levels" of heavy metals, plastic-related compounds, and acrylamide, a probable carcinogen formed during high-heat cooking. On average, dog foods contained three to thirteen times more heavy metals than human foods tested over the past decade.

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The investigation found that dry dog food, commonly referred to as kibble, had the highest levels of contaminants. Specifically, lead and mercury levels in dry food were approximately 21 times higher than in fresh and frozen dog foods. Additionally, kibble contained over 13 times more arsenic and six times more cadmium than its fresh counterparts. The report highlighted that over 81% of commercial dog foods exceeded the maximum tolerated level of mercury set by regulatory agencies, while 100% of the samples tested had lead levels surpassing these limits.

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Experts have raised concerns about the implications of these findings, particularly regarding the potential contribution to higher cancer rates in dogs. According to the American Veterinary Medical Association, about one in four dogs will develop cancer during their lifetime. Chronic exposure to heavy metals, such as lead and cadmium, has been linked to canine cancer, a leading cause of death among dogs. Dr. Joseph Wakshlag, a veterinary nutrition specialist at Cornell University, noted that dogs consume three to seven times the amount of heavy metals per calorie compared to humans.

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Molly Hamilton, executive director of the Clean Label Project, emphasized the responsibility of pet food manufacturers to ensure the safety of their products. She stated, “Pet owners care for their dogs as deeply as parents care for their children. They should be able to buy dog food without worrying it might harm their pet.” The Pet Food Institute (PFI), representing dog food manufacturers, acknowledged the report and stated that they continuously monitor to support the health and safety of pets.

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Despite the alarming findings, some experts caution against panic. Dr. Wakshlag pointed out that while fresh and frozen dog foods generally have lower heavy metal levels, dogs need to consume larger quantities to meet their nutritional needs, potentially increasing their exposure to contaminants. Hamilton suggested that pet owners consider rotating different brands of dry food to diversify their dogs' diets and mitigate risks associated with long-term exposure to contaminants.

High Levels of Lead, Mercury Found in Commercial Dog FoodCNNStudy Reveals High Levels Of Heavy Metals In Dog FoodNewserDog Food Contaminants Raise Fresh Questions About Pet Health

In light of these findings, pet owners are encouraged to be vigilant when selecting dog food. Hamilton recommends considering fresh or frozen options if feasible and rotating brands of dry food to reduce the risk of exposure to harmful substances. The investigation underscores the need for greater transparency and testing in the pet food industry to ensure the safety of products consumed by pets.

High Levels of Lead, Mercury Found in Commercial Dog FoodCNNStudy Reveals High Levels Of Heavy Metals In Dog FoodDog Food Contaminants Raise Fresh Questions About Pet HealthNewser

• “The levels of heavy metals and other contaminants we found were alarming,” — Molly Hamilton, Executive Director, Clean Label Project

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• “If dry dog food is all they consume, it’s possible the accumulation of heavy metals could be contributing to the higher cancer rate in dogs.” — Molly Hamilton, Executive Director, Clean Label Project

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• “We have very few studies that have followed dogs for years on different diets to find those answers.” — Dr. Joseph Wakshlag, Veterinary Nutrition Specialist, Cornell University

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