Eating cat food probably won't hurt your dog, though it's best that he doesn't eat it all the time. Cats and dogs require different diets. Cats are pure carnivores, meaning they typically eat nothing but meat, while dogs are omnivorous, meaning that they eat some plant materials along with their meat.

Cat diets are made primarily of meat and meat products, so in the long run they can be too rich for dogs and can cause digestive problems. They are also denser in calories than dog diets, so they can lead to obesity in dogs. Because of the additional fat and calories, cat food often tastes better to dogs than dog food does, so you may have to keep an eye on your dog to make sure he doesn't indulge in the kitty kibbles.

By the way, while cat food is generally okay for dogs, dog diets lack essential nutrients that cats need to stay healthy, so cats can't live on dog food. Overall, it's safest to feed your pets the kind of food formulated to be healthiest for their specific species. (Ferrets may be the exception. They are the only pets other than cats that are entirely carnivorous, which is why ferrets can live on cat food.)

Published 06/24/09