Executive summary: The author argues that transitioning dogs and cats to nutritionally sound vegan diets would spare billions of farmed animals and yield major environmental benefits, making sustainable pet diets one of the most neglected yet high-impact EA cause areas.
Key points:
Prior studies (e.g., Okin 2017) estimated that 25–30% of the environmental impacts of US animal farming were attributable to pet diets, and subsequent studies have similarly found large environmental and animal welfare impacts.
The author’s 2023 study incorporated the role of animal byproducts (ABPs) and newly available industry data on pet food ingredients to calculate carcass use and estimate savings from replacing conventional pet diets with nutritionally sound vegan diets.
The 2026 study estimates that globally, average annual consumption of farmed land animals is 13 for dogs, 9 for people, and 3 for cats (based on 2018 data), implying that transitioning an average dog spares more animals per year than transitioning an average person.
The author calculates that if all global pet dogs transitioned to nutritionally sound vegan diets, “at least six billion” land animals would be spared annually, alongside greenhouse gas savings equivalent to “1.5 times” the UK’s annual emissions and food energy sufficient to feed “450 million people.”
Surveys of thousands of pet carers suggest that more than 150 million dogs and cats could realistically be transitioned, using conservative assumptions such as one pet per household.
The author argues that criticisms about double-counting carcasses, neglecting literature, or low tractability misunderstand the mathematical allocation of carcass proportions, the engagement with prior studies (75 sources cited in 2026), and survey-based estimates of willingness to switch.
This comment was auto-generated by the EA Forum Team. Feel free to point out issues with this summary by replying to the comment, andcontact us if you have feedback.
Executive summary: The author argues that transitioning dogs and cats to nutritionally sound vegan diets would spare billions of farmed animals and yield major environmental benefits, making sustainable pet diets one of the most neglected yet high-impact EA cause areas.
Key points:
Prior studies (e.g., Okin 2017) estimated that 25–30% of the environmental impacts of US animal farming were attributable to pet diets, and subsequent studies have similarly found large environmental and animal welfare impacts.
The author’s 2023 study incorporated the role of animal byproducts (ABPs) and newly available industry data on pet food ingredients to calculate carcass use and estimate savings from replacing conventional pet diets with nutritionally sound vegan diets.
The 2026 study estimates that globally, average annual consumption of farmed land animals is 13 for dogs, 9 for people, and 3 for cats (based on 2018 data), implying that transitioning an average dog spares more animals per year than transitioning an average person.
The author calculates that if all global pet dogs transitioned to nutritionally sound vegan diets, “at least six billion” land animals would be spared annually, alongside greenhouse gas savings equivalent to “1.5 times” the UK’s annual emissions and food energy sufficient to feed “450 million people.”
Surveys of thousands of pet carers suggest that more than 150 million dogs and cats could realistically be transitioned, using conservative assumptions such as one pet per household.
The author argues that criticisms about double-counting carcasses, neglecting literature, or low tractability misunderstand the mathematical allocation of carcass proportions, the engagement with prior studies (75 sources cited in 2026), and survey-based estimates of willingness to switch.
This comment was auto-generated by the EA Forum Team. Feel free to point out issues with this summary by replying to the comment, and contact us if you have feedback.