New research has found that the diets of some dogs can generate a larger carbon footprint than those of their owners, drawing attention to an unexpected contributor to greenhouse gas emissions.
The study shows that pet foods high in meat—particularly beef and lamb—are associated with significant emissions due to land use, feed production, and methane released by livestock. In households where owners follow plant-based or low-meat diets, a large dog consuming meat-heavy commercial pet food can account for a greater share of total dietary emissions than a human adult.
Researchers emphasize that the findings are not meant to blame pet owners, but to highlight how everyday choices collectively influence climate change. With global dog populations rising, the environmental impact of pet food production is becoming increasingly significant.
Experts suggest that switching to pet foods made with lower-impact proteins, such as poultry, insects, or by-products already generated by the food system, could reduce emissions without compromising animal health. The study adds to growing evidence that climate action extends beyond energy and transport to include less obvious aspects of daily life.
