My friend has a sheltie that has a bit of ruff scale on the nose and the pigment has changed from dark to pink, on the nostril, and a little above, not like a snow nose, much pinker. THe gums have gone from dark to pink as well. Logan does not seem ill, was on anitibiotics weeks ago but not now. I haven't seen anything like this has anyone else got a clue? The gums are not scaley, but there is a big change in color. THey did not look red or swollen.