Why do vegan dogs live longer?

Plant-based dog food is often linked to health benefits: better digestion, fewer allergy flare-ups, and a longer life. That last point isn't marketing. A peer-reviewed study published in PLOS ONE in 2022 found that dogs fed a vegan diet outlived dogs on conventional meat-based food by an average of 1.5 years [1]. Below is what the research actually shows, and what it means for your dog's daily nutrition.

Can a dog eat a vegan diet?

Yes. Dogs are naturally omnivorous, which means they can meet their nutritional needs from plant-based sources, provided the food is properly formulated. The critical factor is amino acid completeness. Dogs require ten essential amino acids, and a diet missing even one of them creates health problems over time.

Vegan dog food doesn't automatically contain all these amino acids, so checking the nutritional composition matters. Brands that formulate carefully will cover the full profile; others may require supplementation alongside the kibble.

Traditional animal-based food tends to cover all essential amino acids by default, which is why the perception that vegan food is nutritionally incomplete isn't unfounded. It's true for some products, but not all. Reading the label carefully is the practical starting point.

What does vegan dog food actually contain?

Vegan dog food contains no animal proteins in production or composition: no meat, fish, eggs, or dairy. IMBY's plant-based recipe, for example, contains no common allergens and delivers a high protein content entirely from plant-based sources.

Can a dog really live without meat?

Yes, provided the diet is nutritionally complete. If it isn't, malnutrition can develop gradually. The answer is choosing a properly formulated product, not avoiding plant-based food altogether. A complete vegan diet supports immunity and overall health. The absence of meat is not the risk; an incomplete formulation is.

Why do vegan dogs live longer?

A 2022 study published in PLOS ONE followed 2,536 dogs across the UK and found that dogs on a vegan diet had a median lifespan of 14.1 years, compared to 12.6 years for dogs on conventional meat-based diets (a difference of 1.5 years) [1]. The researchers also reported lower rates of health disorders and fewer veterinary interventions in the vegan group.

The study's authors linked this partly to reduced exposure to animal proteins associated with inflammatory and allergic conditions, and partly to the typically lower caloric density of plant-based diets. It's observational research, not a controlled trial, so direct causation isn't established. But the signal is consistent with what vets see clinically.

Does vegan dog food help with allergies?

Animal proteins — beef, dairy, and chicken in particular — are the most frequently identified food allergens in dogs. A systematic review found these three ingredients account for more than 60% of reported food hypersensitivity reactions in dogs [2]. A plant-based diet removes all of them.

That makes vegan dog food a reasonable starting point for dogs with suspected food allergies. It isn't a treatment, but eliminating the most common triggers is a standard first step in managing food hypersensitivity. IMBY's GI Sensitive formula is designed specifically for dogs with digestive and skin sensitivities.

Are vegan dogs less likely to be overweight?

Excess weight in dogs can result from caloric density, portion size, or insufficient exercise. Vegan kibble tends to have a lower fat content than meat-based alternatives, which can make daily caloric management easier. That said, overfeeding any food leads to weight gain. The formulation matters, and so does how much ends up in the bowl each day.

Is vegan dog food suitable for all breeds?

There is no breed for which vegan dog food poses an inherent nutritional risk, as long as the formulation is complete. Large breeds, small breeds, and dogs at different life stages all have varying requirements, the same applies to conventional food. The key question is always: does this specific product cover everything my dog needs?

Is vegan dog food more expensive?

Generally, yes. High-quality plant-based ingredients carry higher production costs than conventional animal proteins, and that shows up in the price. Whether the difference is justified depends on what you're comparing. If your dog has chronic allergies and you're spending on vet visits, a properly formulated preventive food may work out cheaper in the long run. IMBY offers a sample pack from €20, so your dog can try it before you commit to a full bag.