Just wanted to let you know if he is scooting it is probably his anal glands??? I wonder if a hot spot is the same thing as anal glands??? Anyway I just thought I would let you know that Mopar my oldest (heaviest) of my 4 is going in for her glands on Thrusday because she too! Has a horrible smell to her backend and she scoots across the floor. She has started this again so its time. I have to take her in about once every six months to have her glands done. I too thought that was a dog thing but my vet mentioned she has a couple of cats they have to do every once in a while. But yes I have to agree its VERY Unpleasent for the human caring for them.