Janet, we had a dog that acted like Penny. He was also a big breed, an austrailian shepherd mix. When he was about 10 yrs old, I ordered some joint meds from foster and smith, we couldn't believe how it helped him to move again. It was wonderful. He lived to be about 15. I can't remember the name of what we gave him but it was for joints. I'll look it up for ya. It wasn't too expensive and just worked so good for him. It's all natural too, no chemicals and no prescription necessary either. I'll let you know what the name of it is.
