Vegan pet food — and the decision to force one’s pet to go vegan — is suddenly very buzzy. ABC News reports that it’s a bit easier for a dog to go vegetarian than it is for a cat, and one person they interviewed said she suspects that “vegan” cats are supplementing their diets by hunting.

But there are some strong proponents of the idea:

Now artists and activists (with one more feline in the family) in Ithaca, N.Y., Moore and her partner, Shira Golding, are part of a relatively small but deeply dedicated group of vegan pet owners who believe their cats’ and dogs’ diets should reflect their own beliefs about the treatment of animals and environmentally sustainable lifestyles.

Despite the anecdotal evidence the group has amassed that supports vegan pet diets, many veterinarians are reluctant to recommend the meatless option.