Oh no Poor Mizzy sounds so ill Was he doing ok until today...eating and drinking ok? I hope the vet can give him something to make him more comfortable and figure out what's going on with him. Does he have arthritis? You mentined aspirin. At 15, I'm sure he has a lot of little aches and pains Does he normally eat catfood Ky? Perhaps that upset his stomach. My vet has told me that catfood, although dogs love it, has too high a protein content for dogs to handle well regularly. Please give Mizzy a hug for me and please let us know how it goes tomorrow. Prayers are on the way to you, dear Mizzy.