How funny you mention this! I just picked Bimmer up an hour ago and felt a bump on his side below his rib cage that I hadn't noticed before. He just had his third round of shots (rabies for the first time) last Friday, so I suspect that's the cause. Either way, he doesn't seem bothered by it at all, so ole dad isn't going to worry about it.
Now his hair falling out in clumps isn't getting any better, but we're still waiting for test results and Bimmer is his same ole self, so again ole dad isn't going to borrow any trouble.