Dogs Thrive on Vegan Diets, Demonstrates the Most Comprehensive Study So Far

The most extensive peer-reviewed study conducted to date shows that dogs on nutritionally-sound vegan diets maintain health outcomes similar to those on meat-based diets. Published in PLOS ONE, this study evaluated the health of 15 dogs through blood and urine analyses, veterinary clinical parameters, and monthly questionnaires. For a year, these dogs ate vegan diets based on pea protein.

The study revealed that overweight dogs lost weight, while others maintained a normal weight. Blood levels of amino acids and vitamins were generally stable. Previous deficiencies seen in meat-based diets, such as L-taurine and L-carnitine, improved or disappeared.

Given concerns about peas contributing to heart disease, the study found no evidence of such issues. Indicators of cardiac health remained unchanged or improved. Lead researcher Dr. Annika Linde highlighted the evolutionary adaptations allowing dogs to thrive on omnivorous diets, including those without animal ingredients.

Study co-author Dr. Melgarejo discussed the environmental benefits, noting that U.S. pets consume more meat than most countries. Veterinary Professor Andrew Knight emphasized that vegan diets for pets could substantially reduce greenhouse gases and feed hundreds of millions more people.