How do you get your dogs to stop eating from the cats food dish?

I have 2 dogs and a cat at my house. They each have their own food dish, the dogs obviously have dog food and the cat has cat food, but my dogs are always eating all of my cats food out of her dish, almost to where it is empty. How can I get my dogs to stop doing this? We already know we dont want to put the cats food dish on the table or counter.