ARTHRO-IONX helps with pain, stiffness, and inflammation without the side effects associated with other NSAIDS. I would initially start with a half dose on the food twice daily, on the breakfast and supper food. Since your dog seeks cool places I would choose a cooling food according to Chinese food therapy. If your dog is not allergic to one of these proteins I would try a fish or turkey based grain free food. Water is also important. If your water contains chlorine then you should offer filtered water.
Please let us know how you do and we can help guide you.