There are really good explanations here explaining why cats (and doggies!) by no means can live happy and healthy lives on a vegan diet. I totally agree with what has been said (though I studied in Medicine Veterinay that dog's origin is not clear at all and that there are more species, such as jackals, involved in the creation of the ancestors of our domestic dogs... all of them carnivore, of course).
I want to add a little thought to this whole discussion. Carnivores are necessary. There is nothing moral or inmoral in the food chain, it is just the way things are. Without carnivores to control herbivores porpulation, our world would be unsustainable, so I do not see the point on demonizing carnivores and forcing them to be something that their bodies are not meant to be.
I want to add a little thought to this whole discussion. Carnivores are necessary. There is nothing moral or inmoral in the food chain, it is just the way things are. Without carnivores to control herbivores porpulation, our world would be unsustainable, so I do not see the point on demonizing carnivores and forcing them to be something that their bodies are not meant to be.