My dog has large amounts of swelling on his front and back right legs. It is sacks full of liquid. On his front leg the sack is as big as a golf ball. My dog is on Prednisone and has a history of bad health. He is only 6 years old(lab chow mix) but is extremly over weight do to the Prednisone. I was wondering if this swelling is a sign that he is at the end of his life? I took him to the Vet however they are still running test on the liquid extracted from his leg and im am beging to get nervous. Any answer will be helpful thank you.