Took my daughter's dog to be groomed and anal glands done 2 weeks ago. Itching from the fur clipping has diminished, but he still bites at his butt and tail. I bathed him after the grooming, thinking he was allergic to the shampoo, including hosing off his butt. As previously noted, the general itching has basically diminished. I also dewormed and put Frontline on after the grooming, thinking that was causing the anal itching. At times he walks with his rear curved toward one side or the other. No redness, and he is regular. Any suggestions?