I agree both should be an option. I currently have both. A cat that's about9 and a dog that is 2. My wife took our older dogs I had a bullmastiff and American bull. I now have a Plotthound. The cat she only comes around she is outside and only indoors when it gets cold. Then she comes crying at the window. My hound that's my buddy and now that I have found a premium dog food with DHA omega 3 In it he responds better and is more keen to react to his training. I even gibe this fog food to the cat. I mix a little in with her food she only eats the cat food because the fog food is in it. If I just put cat food it sits until some dog food is added. I know cat food has more pure animal protein but I think she likes the flavor.