Rufus has been scratching at his neck quite a bit lately, and when I took his collar off to give him a bath I noticed he has an area on the underside of his neck that is very red. It looked like there might be some dried blood in his fur. At first I was mystified, but then I remembered that my daughter had a nickel allergy as a baby and I first noticed it when she developed red itchy spots precisely where the snaps on her sleepers were. I looked and, sure enough, the irritated spot is just under the place his metal tags lie. So, collar is currently off for all but walks, and I'll see if it helps. I just wondered if anyone else has had something similar develop in their corgi.