About a Dog's Anal Glands

Kelly Roper
Beagle dog
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Most people never think about their dog's anal glands until there's a problem with them. These glands are designed to provide lubrication when a dog passes a stool, and they also give each dog its own unique scent. Find out how these glands work, how to spot when there's a problem, and how to take care of it.

How Anal Glands Work

Every dog has two small glands located on either side of its rectal opening. Each gland holds a small amount of a brown, noxious-smelling liquid substance. Whenever your dog urinates or defecates, these glands receive a small amount of pressure that releases a tiny bit of the fluid along with your dog's custom-blended scent.

Your dog can also express a little of his personal essence when he meets a fellow canine. Have you ever noticed how two dogs raise their tails on high alert when they first meet? This action applies pressure to the anal glands, and this leads to the traditional butt sniffing humans cannot seem to fathom. However, this greeting is as normal to dogs as shaking hands is to people. Sniffing helps the dogs learn to identify each other by their scents.

If you're alarmed at this point about all this expressing going on, don't be. Remember that a dog's sense of smell is light years beyond a human's, so the amount liquid expressed is minute, and you'll likely never smell anything unless your dog develops a problem.

Gland Problems and Diet

Many dogs never seem to have a problem with their anal glands. However, bacteria can build up in the anal glands if they don't express properly, and this can lead to an infection. Left untreated, the infection can produce an abscess which may eventually rupture through the skin and cause further complications. View the accompanying video for an in depth explanation about anal glands and associated problems presented by Karen Becker, DVM.

Some anal gland problems may be linked to the quality of pet food a dog receives. Inexpensive brands of dog food often use cereal fillers that tend to result in soft stools. The soft stool isn't able to press firmly enough against the dog's anal glands to provide the necessary pressure to express them, and there the trouble begins. Higher quality dog foods will help your pet produce firmer, more compact stools that actually help the glands express, so those foods may be a better food choice for your pet.

Signs the Glands Are Impacted

If your dog's anal glands fail to express properly, they may actually become impacted and make your dog very uncomfortable. Watch for these signs:

  • Your dog begins scooting or dragging his rear across the floor.
  • Your dog keeps licking or chewing near his rectum.
  • Your dog's stools have become soft and mushy.
  • You'll likely notice a foul or "fishy" odor coming from your dog's rear.

If you notice one or more of these signs, it may be a good idea to take your dog in for a check up with his vet. The glands may actually need to be manually expressed, a job best left to the professionals. Some professional dog groomers will also perform this procedure at your request.

How to Express Your Dog's Anal Glands

Many breeders and owners feel capable of expressing their dog's anal glands themselves. However, consider yourself warned that this is a smelly and unpleasant task. Please be advised, that you should only perform this procedure on your own dog and never someone else's.

  1. Prepare a warm, moist washcloth.
  2. Locate your dog's anal glands by raising his tail and using your other hand to feel for two lumps at approximately five and seven o'clock on either side of his anal opening.
  3. Holding the cloth over his anal opening to prevent an unpleasant squirt, begin applying firm but gentle pressure to the sacs. This should cause some of the fluid to be expelled through the rectal opening, thereby emptying the glands. Wipe your dog's behind clean, and the job should be finished.

If you notice blood or pus in your dog's anal gland secretions, it is likely a sign of infection, and you should contact your vet for an appointment and treatment.

The following video shows a different method many veterinarians use to express the glands.

Express Only When Necessary

Under normal circumstances, the anal glands are able to function completely on their own without human intervention. Unless your dog has developed a problem, it is better to avoid routine expressing of the glands, and let your dog's body function the way it was designed to do.

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About a Dog's Anal Glands