Yes, around this age you may start to see signs of arthritis. I would get her on a good joint supplement. We use Nujoint Double Strength for Tyson, but anything that has MSM(Methylsulfonylmethane), Glucosamine, and Chondroitin is what you need. Should give her some relief, if its really bad one day - and you have a heating pad, that along with a nice massage will help soothe the joints a bit. But I would definitely get her on a supplement - they love them anyway, we use ours as treats, Tyson loves them.