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Understanding anal gland disease in dogs

Both male and female dogs have anal sacs with glands which secrete an oily, strong-smelling substance used to mark their stools. The opening to the anal sac is visible in the lower region of the anus. Anal gland disease is common in dogs and causes problems when defecating.

Why do dogs have anal glands?

Every time a dog defecates the stool should put enough pressure on the anal glands so that some secretion is deposited on the stool. This allows dogs to keep track of other dogs presence on their territory as they can sniff the stools they find. Additionally, dogs recognize each other by smelling the anus as each dogs anal glands produces a unique scent.

Problems associated with anal glands

Infection - Bacteria grows in the anal glands causing infectionImpaction - If a dog fails to express her anal gland regularly, the fluid becomes thick and solidified
Abscess - When the infection builds and creates a swelling, the skin over the sac breaks open, and pus seeps onto the skin
Cancer - Chronic and advanced anal gland problems such as recurring abscesses can occasionally lead to cancer


  • Sitting down on its rear and dragging its bottom across the floor
  • Licking the anal area excessively
  • pain around the tail and anus
  • swelling of the anus
  • blood or pus seeping out of anus
  • biting or scratching when you touch the area near the tail


When the glands become impacted, a vet must clean them out manually. This is done by applying pressure. A vet presses his index finger inside the dogs anus and his thumb outside the anus. If this does not prove sufficient anal gland abscesses often must be surgically treated by a vet along with the prescription of antibiotics. For dogs with repeated or chronic problems, surgical removal of the glands is sometimes recommended.


Dogs with recurrent anal gland impactions are often placed on a high fibre diet which will make their stools more bulkier. This will put more pressure on the anal glands allowing them to resume normal function. If your dog has had previous problems with its anal glands there are products that may help to alleviate the problem which contains high fibre that helps to control the consistency of stools and manage anal sacs. A dog with repeated anal gland problems should be regularly checked by a vet, and the glands expressed as frequently as required. If you know that your dog has had problems with his anal glands in the past be especially vigilant for signs like scooting or excessive grooming around the anal area, and see the vet straight away as soon as you notice them.


Royal Canin Fibre Response

Royal Canin Fibre Response

  • high in dietary fibre for quick transit through the digestive system
  • added nutrients support a balanced digestive system
  • prebiotics maintain healthy gut flora
  • contains highly digestible proteins
  • EPA/DHA long-chain fatty acids help digestive health
  • antioxidants neutralise free radicals


Protexin Pro-fibre Protexin Pro Fibreis a tasty, palatable pellet that can be added to your pet's daily food. Some cat and dog foods can leave your pet lacking in their daily intake of fibre. This can lead to problems with digestion. If your dog isn't getting enough fibre in their diet, it can have a negative effect on their health. Lack of fibre means they can't digest their food efficiently, which in turn means they can't absorb all of the nutrients they need. A low fibre diet has been linked to impaction of the anal glands and coprophagia (eating their own stools).



This article is intended as a guide only. Always seek advice from your veterinary surgeon prior to changing your dog's diet