Butt scooching!

So, recently a friend called me and was wondering if he should give his dog some tapeworm meds that he had leftover when the dog was scooching his butt on the floor and biting at it.  My suggestion:  Check his anal glands.  The anal glands are located around the anus and should naturally express themselves when dogs go to the bathroom.  Sometimes these glands get clogged and will fill up and create angry little cyst-like bumps on the dog's butt. Groomers or your vet can "express" these glands for a small fee. Or if you are one of my friends and this is a problem you are having, give me a call.  I have experience and can help you out!  The friend that asked me about this happened to have worked as a groomer and was able to take care of the problem himself, but do not attempt to express the anal glands without experience!!