Pet Food Sustainability and Animal Welfare Trade-offs

The environmental and welfare footprint of conventional pet food — primarily derived from farmed and wild-caught animals — creates important ethical questions about sustainable and welfare-conscious pet nutrition.

Key Facts

Pet dogs and cats in the USA consume animal-derived calories equivalent to the diets of approximately 163 million humans annually
A large portion of commercial pet food uses by-products from human food production, which can be a welfare-neutral use of materials that would otherwise be wasted
Fish-based pet foods contribute to pressure on wild fish populations already stressed by commercial fishing
Insect-based pet food ingredients have a dramatically lower land, water, and greenhouse gas footprint than conventional meat-based alternatives
Nutritionally complete plant-based diets for dogs are feasible and have been shown to meet their nutritional requirements in research studies
Cats are obligate carnivores requiring taurine and arachidonic acid found in animal tissues, making fully plant-based cat diets more nutritionally challenging
Novel protein sources including black soldier fly larvae and algae are entering commercial pet food markets as sustainable alternatives

Welfare Considerations

Pet food represents a significant but often overlooked dimension of companion animal welfare that connects directly to farmed and wild animal suffering at scale. Choosing pet food that minimises harm requires understanding the supply chain: by-product-heavy foods may actually reduce waste from existing farming rather than driving new animal use, while premium whole-meat foods may involve more dedicated animal production. Insect protein offers a promising middle path, with lower suffering potential per unit of nutrition than conventional livestock. Engaging with this issue thoughtfully rather than assuming any single answer is correct reflects the genuine complexity of welfare trade-offs in food systems.

What You Can Do

Research the protein sources in your pet food and consider their welfare and environmental footprint
Consider insect-based pet food as a lower-suffering protein source where nutritionally appropriate
For dogs, explore nutritionally complete plant-based diets with veterinary guidance
Avoid pet foods containing wild-caught fish from species under significant fishing pressure
Support companies investing in novel sustainable protein development for pet food
Engage pet food manufacturers about their sourcing welfare standards
Consult a veterinary nutritionist before making significant changes to your pet diet