I don't know about the Gravy Train for dogs, but if you're referring to the Meow Mix as cat food, you better get something not bought in the grocery store. Grocery store cat food is junk food for cats. It can create a lot of problems in cats, especially malnutrition and possibly a disease called Feline Urological Syndrome which causes crystals to develop in cats' urethra and they won't be able to pee. The crystals form a blockage and this requires IMMEDIATE treatment or the cat can die within just a few hours. I learned this from experience of 2 male cats I had who developed this because I was too cheap to buy better cat food. These cats had to be treated and that costed a LOT MORE MONEY than the better food would've costed. Also, now they need special prescribed diets and daily medicine just to maintain their urological health for the rest of their lives. Don't wait until your cats get sick -- ask your vet about what to feed them --- and stay away from the cheap cat food -- it could be deadly!