Comment by tomweingarten

Hi! I'm not a veterinary nutritionist, but I did used to teach metabolic biochemistry, and I spoke to a few veterinary nutritionists before putting my own dog on a vegan diet. Dogs are omnivores, so there are many vegan diet options dogs can live on healthily and happily. We like to think of dogs as friendly wolves, but they evolved a significantly different metabolism to co-exist with humans. I use a combination of Wild Earth and Bramble. Cats are obligate carnivores, so they require some chemicals (most notably Taurine) that don't naturally occur in plants. But there's no strong scientific barrier to us creating vegan cat diets through supplementation in the near future.