canine anal glands can become infected with bacteria, leading to irritation, redness, swelling and odor in the anus area. Bacterial infections can develop into abscesses or can even cause the rupture of the glands themselves. Anal glands, or anal sacs, are found on both sides of a dogs anus, just underneath his tail. This pair of small glands is filled with oily fluid that has a similar smell as the odor a skunk. Anal glands are blind-ended sacs that exist inside the rectal opening at the approximate 4 and 8 oclock positions. They create a smelly secretion that often has a fish-like odor. When a dog defecates, the glands should contract and this smelly liquid should be expressed and mixed in with the fecal matter. This odor is also likely the signal being sampled when strange dogs investigate one another by sniffing out the anal area. Dogs anal glands can become swollen and unable to drain naturally, sometimes requiring a visit to the veterinarian or groomer to express the built up liquid. Excessive licking and chewing of the area is one indication of this. Anal gland problems, such as impacted anal glands or anal gland abscess, are rather common in dogs. When your dog has one of these problems, you will definitely notice a distinct, powerful fishy odor coming from his rear end. Another indication of anal gland problem is that you will notice your dog scooting on the floor from time to time. Some animals when frightened will empty their anal sacs, much to the consternation of anyone around them. The emptying of anal sacs is a standard veterinary procedure. No matter the cause of an anal sac being emptied, some action must be taken as soon as possible. Common anal sac problems include anal sac impaction, anal sac infection, and anal sac abscesses. This page looks at the likely causes and treatment options of anal sac problems, and how to express the canine anal sacs. A dog has two two glands or sacs located on both sides of the anus. When feces are expelled, it can exert pressure on these glands. Sometimes, however, the anal glands can become infected, which may explain why a dog starts bleeding from the rectum. In these cases, the dog will feel pain and a yellow or bloody discharge will be released. Anal leakage is a condition where muscles and nerves around the anus dont work properly. These muscles and nerves usually work together in order to hold feces in the bowels. When either the nerves or the muscles do not work in coordination, anal leakage is a common occurrence.