[Lola B Marie]

Every time I take Lola to have her nails cut, the vet takes her in the back and I never see what he does. She always seems happy to go with him or the tech. When she comes back, her nails are cut and her butt is all wet. In the parking lot, she tries to sit and drag her bottom. Sometimes she has diarrhea. I asked at the desk and was told the dr. expressed her glands. Why does he do this? Is this necessary?She has no odor ,is not puffy , and does not lick herself very much. I don't remember ever having this done to any of my dogs. I never asked for Lola to have this done. There is no charge on my bill for this or her nails. Should this be done on a need to do basis? Your imput is very much appreciated. Thanks,
Jane