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DogCatDigestive

Constipation and obstipation

Small dry stools, unproductive straining, painful defecation, poor appetite or vomiting may accompany constipation. Do not mistake inability to urinate for constipation.

Veterinary assessment needed

Go to a clinic immediately if

  • A cat strains without urine, the abdomen is very painful or swollen, vomiting repeats or weakness is profound
Contact a veterinary clinic

Possible signs

  • Small dry stools, unproductive straining, painful defecation, poor appetite or vomiting
  • The pet passes very hard stool infrequently, remains in the defecating posture or avoids the toilet area

Contact a veterinarian today if

  • Seek same-day care if no stool has passed for several days, straining is painful or appetite has fallen

What it is

With constipation, feces remain in the colon and dry out; in severe obstipation the animal cannot pass them unaided. Causes include dehydration, pain, pelvic narrowing, neurologic or colonic disease.

What to expect at the veterinarian

The veterinarian will assess the abdomen, rectum, hydration and medicines; radiographs and blood tests may be needed. Severe cases require fluids, enemas or removal under anaesthesia.

Sources

Updated: 26 Oct 2026