Support healthy stools—not a promised cure.
Anal sacs usually empty as a dog passes a well-formed stool. For some dogs, additional dietary fibre can increase stool bulk and support this natural process. It does not guarantee prevention, and recurrent problems can also involve anatomy, diarrhoea or constipation, excess weight, skin disease or allergies.
Make measured changes.
Begin with a complete, life-stage-appropriate diet, adequate water, regular activity and a healthy body condition. If your vet recommends extra fibre, small amounts of plain cooked pumpkin, sweet potato or carrot may be suitable examples. Introduce one change gradually so its effect on stool consistency can be assessed.
Ground flaxseed, chia or a formulated fibre supplement may suit some dogs, but the amount, water intake and overall diet need consideration. Ask your vet or veterinary nurse before adding them—particularly for a puppy, a very small dog, a dog with a medical condition or one receiving a prescribed diet.
Do not use bones or poultry necks as an anal-sac strategy. They are not a source of dietary fibre and can introduce choking, dental, obstruction, injury and—in raw products—bacterial risks.
Know when diet is not enough.
Scooting, repeated licking or biting around the back end, a persistent fishy smell, discomfort when sitting, straining, swelling, blood or discharge should be assessed by a veterinary professional. Pain, marked swelling, bleeding or an open wound warrants prompt attention.
Do not repeatedly express anal sacs at home unless a veterinary professional has examined the dog and taught you to do so. Recurrence should prompt assessment for an underlying cause rather than progressively increasing fibre without advice.
General information only. Contact your vet for advice tailored to your dog, especially if appetite, weight, thirst, stools or behaviour change.