Mack has a large pink area going down his back. It dont seem to be itching or bothering him in any way at all. What could this be? Should I worry or is it normal for white coats to have areas like this? Also on his sides he has 2 pink quarter sized spots that look dry and hair is thinned out on and around them. I would post a pic, but he hates to sit for them.lol I had to get these while he was napping.