Kodi has been licking his butt... a LOT lately. To the point that the hair (not the skin) around it was turning pink, like white faced dogs get around their mouths. I had taken in a stool sample, which was clean of any type of parasite, but then Dave got so sick, and Kodi's butt got put on the back burner (so to speak
Today he had his regular chiro appointment, and I asked this vet to look at his butt too. It turned out that his anal glands were REALLY full. She emptied them, and said she thought he'd feel much better in a couple of days. He's 4 years old and has never had a problem with his anal glands before. I asked her if it was likely that he'd need to have them checked/emptied regularly, and she said, no, that it could be a one-time thing.
Since he goes in for chiro every 6 weeks, it's easy enough to have her check him from time to time, and I'll also be on the look-out for butt licking. I knew that dogs often scooted when they had trouble with their anal glands, but he has NEVER scooted, so I didn't even think of that.
So, if your dog does a lot of licking back there and you know it's not parasites, you might want to have his anal glands checked!