1 Despite clever advertising, kibble is still kibble, even if itâs low-carb and grain-free. 2  Your pet evolved to eat living, unprocessed foods; years of eating cooked and refined commercial pet food has taken a toll on the health of dogs and cats. Your pet evolved to eat living, unprocessed foods; years of eating cooked and refined commercial pet food has taken a toll on the health of dogs and cats. 2  Despite its convenience, kibble is not a healthy alternative to a raw or balanced homemade diet for your pet.