May 2, - Sometimes our beloved pets require more than just love & attention. Expressing your dog's anal glands is a simple & painless way to help them. Sep 20, - Place your thumb on the outside of your dog's anus and bring your thumb and index finger together, running them around his anus. You can locate the anal glands one at the 4 or 5 o'clock position and the other around the 7 or 8 o'clock position. Feel for a firm pea to plum sized object.