The Truth About BHA and BHT in Pet Food

When it comes to your dog’s food and treats, the ingredient list matters just as much as the front label. Two common additives you’ll see in many commercial brands are BHA (butylated hydroxyanisole) and BHT (butylated hydroxytoluene). Both are synthetic preservatives—but are they safe for your pet?

What Are BHA and BHT?

 

BHA and BHT are chemical antioxidants used to extend shelf life in foods, cosmetics, and even packaging. In pet food, they’re often added to fats and oils to keep them from spoiling.

• BHA: A waxy solid derived from petroleum.
• BHT: A crystalline compound also derived from petroleum.

Their job is simple—prevent rancidity—but the controversy comes from what happens inside the body.

Why They’re Controversial

• Classified as possible carcinogens: The U.S. National Institutes of Health has linked BHA to potential cancer risks in lab animals. BHT has been flagged for causing liver, kidney, and thyroid issues in some studies.
• Banned elsewhere: While still allowed in the U.S., both are restricted or banned in parts of the EU, Japan, and Australia due to health concerns.
• Not species-specific testing: Most research is done on rodents, not dogs, but the risks raise serious red flags.

 

The Safer Alternatives

Many higher-quality pet food and treat companies now use natural preservatives instead:

• Mixed tocopherols (Vitamin E)
• Ascorbic acid (Vitamin C)
• Rosemary extract

These options extend freshness without adding questionable chemicals.

Why It Matters for Your Dog

Dogs eat the same diet day after day, which means exposure to BHA and BHT isn’t occasional—it’s constant if those additives are in their food. Even if the dose is small, long-term accumulation is what worries nutrition experts.

The Bottom Line

If you see BHA or BHT on the label of your dog’s food or treats, think twice. Just because it’s legal doesn’t mean it’s healthy. Look for products with natural preservatives and whole ingredients you recognize.

At Fleet & Fur, we say no to artificial preservatives. Our treats are made with fresh, human-grade ingredients—because your dog deserves better than risky shortcuts.

 

Fleet and Fur

Veteran-owned. Nutrition-focused. Mission-driven.