>> The vet wanted to x-ray his hips. Due to his age, I don't particularly want to subject him to anesthesia.<< Matt - at the very least you should have him manually examined by your vet. This could be any number of problems including a cruciate ligament tear - which is very painful. Good luck with your boy, Geraldine SheepRiver Great Pyrenees Alberta, Canada www.sheepriver.com