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Vetdle Archive

Archive Case #115: Canine Anal Sacculitis

Dog veterinary case - Medium - June 26, 2026

Clinical Clues

  1. A dog is uncomfortable around the rear end and seems reluctant to settle.
  2. The owner notices scooting and repeated licking under the tail.
  3. There is an unpleasant odor and pain when the dog sits.
  4. Perianal examination reveals swelling beside the anus.
  5. Digital palpation and expression produce thick abnormal material from paired sacs.
  6. Anal sacculitis is inflammation or infection of the anal sacs causing scooting, licking, and perianal pain.

Diagnosis

Canine Anal Sacculitis

This case is most consistent with Canine Anal Sacculitis because the dog has painful swollen anal sacs with abnormal discharge. The most important clues are the scooting behavior and perianal pain, which make a simple gastrointestinal problem less likely.

Learning review

Review the case evidence

Use the paired clues to explain how the evidence in this dog case supports the provided diagnosis, Canine Anal Sacculitis, then compare your reasoning with the case explanation.

Evidence checkpoints

Clues 1-2

  1. Clue 1: A dog is uncomfortable around the rear end and seems reluctant to settle.
  2. Clue 2: The owner notices scooting and repeated licking under the tail.

Clues 3-4

  1. Clue 3: There is an unpleasant odor and pain when the dog sits.
  2. Clue 4: Perianal examination reveals swelling beside the anus.

Clues 5-6

  1. Clue 5: Digital palpation and expression produce thick abnormal material from paired sacs.
  2. Clue 6: Anal sacculitis is inflammation or infection of the anal sacs causing scooting, licking, and perianal pain.

Self-review prompts

  1. After clues 1-2, what evidence from this dog case shaped your initial interpretation?
  2. When you compare clues 3-4 with clues 1-2, what changed in your reasoning about Canine Anal Sacculitis?
  3. How do clues 5-6 align with the case explanation for Canine Anal Sacculitis?

Educational Use

Vetdle archive cases are educational veterinary games for diagnostic reasoning practice. They do not provide veterinary advice, diagnosis, treatment, or professional medical guidance.