Vegan Cat Diets Linked to Lower Overweight Odds
An online survey of 1,305 cats found those eating vegan diets had 34% lower odds of being assessed as overweight than cats on conventional meat-based food.
Updated on Nov. 1, 2026 in Cats
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A study published 11 September 2026 in Frontiers in Animal Science reports that cats eating vegan diets had 34% lower odds of being assessed as overweight than cats eating conventional meat-based food. The findings are based on caregiver reports of veterinary assessments from an online survey of 1,305 cats, each having followed their diet for at least one year.
Why it matters
Overweight and obesity are common in domestic cats, with an estimated 30-60% of the population affected, making diet a widely relevant factor for cat owners worldwide. The results suggest that diet type may be associated with weight outcomes, though the study design limits conclusions about cause.
The figures come from caregiver-reported veterinary assessments gathered in an online survey of 1,305 cats, with 34% lower odds of overweight status among vegan-fed cats compared with the 90% of the sample on conventional meat-based diets. Researchers did not measure food or energy intake directly, so the causal role of diet remains unresolved.
The players
Andrew Knight
Andrew Knight is an animal welfare researcher at Griffith University in Australia who contributed to the study on vegan cat diets.
Frontiers in Animal Science
Frontiers in Animal Science is a peer-reviewed open-access journal that published the study on vegan diets and feline weight.
The details
Researchers calculated the difference after accounting for age, sex, neuter status, activity, and feeding practices. Most vegan-fed cats were eating predominantly dry food and had food available throughout the day, and their caregivers reported fewer weight-related disorders.
Timeline
11 September 2026: Study published in Frontiers in Animal Science.
1 November 2026: Article on the findings published by SciTechDaily.
Feline Weight Context
Estimates that 30-60% of domestic cats are overweight or obese frame the study's finding within a condition affecting a large share of the pet population. The vegan-diet result adds to ongoing questions about how feeding choices relate to that prevalence.
Cat owners weighing diet changes should note that the study measured caregiver reports rather than controlled feeding, so results do not establish that switching to a vegan diet will prevent weight gain. Any diet change for a cat is best discussed with a veterinarian before it is made.
The takeaway
Diet type may be associated with healthier weight in cats, but the evidence so far comes from self-reported surveys rather than controlled feeding. Owners should review any feeding change with a veterinarian.
Further reading
Explore more on Cats to see how feeding choices fit into everyday feline care.
Source note: This article includes information reported by SciTechDaily.
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Would you consider feeding your cat a vegan diet?
