I just noticed the other day on my almost 10 year old GSD Kaos front right leg. It looked like the joint was swollen that's right below the shoulder. I felt all around no pain. Doesn't feel swollen but the joint bones actually feel bigger then the ones on his other front leg. A little history the poor guy's hips are completely gone. So I though another possibility was him injuring himself staggering around trying to walk when I wasn't home. But there is no limp or pain of any kind it seems from that leg. Also I thought it might be a hair follicle tumor. When Kaos was two he had a toe on that leg amputated because of it. But he isn't at it like with the toe. It just feels like the joint is bigger. I took a couple pics. It is on the very outside looks like a bump or lump. (not talking about the leathery looking spot) But its very noticeable when actually looking at the leg. Thanx much in advance.....