Do you have several pets? Do they ever try to eat each others food?  If so, it’s not a good idea to let the dog eat the cats food or the cat eat the dogs food.  A little dog food every now and then probable won’t hurt your cat but a steady diet of dog food can make a cat ill.  Cats are  strickly meat eaters so they need more protein that’s not found in dog’s kibble. Cats also need specific B complex vitamins and amino acids that aren’t found in dog food. On the other hand, a dog’s occasional nibble out of a cat’s bowl probably won’t hurt him but cat foods are high in calories.  A dog that eats lots of cat food could become obese.  Obesity is a serious health risk for your dog.  If your pets try to snatch food from one another, keep them separate when they eat. It’s a good idea to keep your dog’s water bowl and food bowl in a separate room.