I have a dog, a lovely animal... I'm feeding him dog food that's numbered. I'm not sure what it is, but they got it for everything. One for puppy, two for the middle dog, three for the gay dog, four for the whatever. On up. I'm looking at the can and it says on there "for the dog that suffers constipated." The way I look at it, if you're dog is constipated, why mess with a good thing.