Anal glands, or anal sacs, are two small glands present in both dogs and cats situated just below and either side of the anal opening. These glands produce a substance that is secreted through ducts just inside the rectum when pressure is put on the glands- most commonly by the passing of feces. When bacteria find their way into the glands, infection can occur and lead to an abscess. Your pet may whimper or cry when attempting to defecate - this should alert you to the possibility of infection. Abscesses can also be extremely painful for your pet and will require the attention of a vet and possibly antibiotics to clear the infection. For this reason, it is best to prevent complications as much as possible. Anal glands should be regularly checked and expressed when necessary in order to empty the build up of secretions from the gland. This can be done by your vet, groomer or even by you - getting the knack of this is not difficult especially once you have been shown the technique. To express your pets anal glands use your fingers or a thumb and forefinger to gently apply pressure on either side of the anal opening - on the outside of the glands. Press inwards and upwards and you should see the fluid being expressed.