So Chase is my family dog who turned 16 in May. In the past few months is back legs have not been holding up good. His back side wobbles as he walks like he is going to fall over any second and he has lately.He'll just be walking around in the kitchen and fall over. We've tried getting him to lie down and stop pacing the floors all the time, but he won't. I know one of his legs are bad from being hit my a car when he was younger. Does he have arthritis? Is their anything I can do to help make his back legs stronger? My mom suggested making sure he gets a walk every day. Any other idea's?