A cat with a prolapsed anus (rectal prolapse) cannot safely live with the condition for long. Without treatment, the exposed tissue begins to dry out, swell, and deteriorate within days, and the situation can become life-threatening once infection sets in. This is a veterinary emergency, not a wait-and-see situation.
How Quickly the Condition Becomes Dangerous
When rectal tissue is pushed outside the body, it loses its normal blood supply and moisture. The tissue swells, develops sores, and starts to dry out. If the prolapse isn’t addressed, the tissue changes color from pink or red to a very dark red or black, signaling that it’s dying. In one documented case, a cat presented after six days with a protruding mass that already showed areas of dead tissue, pale gums, and significant dehydration.
There’s no fixed number of hours or days before the situation turns critical, because it depends on how much tissue is exposed, whether blood flow is partially or fully cut off, and the cat’s overall health. But the progression follows a predictable path: swelling, then ulceration, then tissue death, then bacterial infection that can spread into the bloodstream (sepsis), and eventually death. This can unfold over days rather than weeks. A cat that seemed stable yesterday can deteriorate rapidly.
Signs the Prolapse Is Getting Worse
The most obvious sign is the tissue itself changing color. Healthy rectal tissue is pink or light red. As it loses blood supply, it darkens to deep red, purple, or black. You may also notice the mass getting larger as swelling increases. Other warning signs include lethargy, loss of appetite, straining to defecate, and signs of dehydration like dry gums or skin that doesn’t snap back when gently pinched. If the tissue has become infected, your cat may develop a fever, stop eating entirely, or become unresponsive.
What a Vet Will Do
Treatment depends on how much damage the tissue has sustained. If the prolapse is caught early and the tissue is still viable (pink, moist, and intact), a vet can often gently push the tissue back into place and hold it there with a temporary stitch around the anus. This stitch, called a purse-string suture, stays in place for two to three days while the tissue heals in its normal position. The cat needs to be able to pass stool during this time, so the suture is placed loosely enough to allow that.
If the prolapse keeps recurring after this approach, a more involved surgery called a colopexy may be recommended. This procedure permanently attaches part of the colon to the abdominal wall to prevent the rectum from sliding back out. In a study of three cats that underwent this surgery, none experienced a recurrence during six months of follow-up, and no complications were reported.
If the tissue has already died, partial amputation of the damaged rectum may be necessary. This is obviously a bigger surgery with a longer recovery, which is exactly why early treatment matters so much.
Why It Happened in the First Place
A prolapse rarely happens on its own. It’s almost always triggered by prolonged straining, which can come from severe diarrhea, constipation, intestinal parasites, or a blockage. Kittens and young cats are more commonly affected, partly because parasitic infections are more prevalent in that age group. In some cases, a condition called intussusception, where one segment of intestine telescopes into another, can look very similar to a simple prolapse but is far more dangerous. A vet can distinguish between the two during examination by checking whether a probe can pass between the protruding tissue and the rectal wall.
Identifying and treating the underlying cause is essential. If the reason for the straining isn’t resolved, the prolapse will likely come back even after successful treatment. This means deworming if parasites are involved, managing diarrhea or constipation, or addressing any deeper gastrointestinal problem.
Recovery After Treatment
The prognosis for rectal prolapse is favorable when the underlying problem is controlled and treatment happens before tissue death occurs. After a simple reduction with a purse-string suture, most cats recover within a few days once the stitch is removed. Stool softeners and a bland or high-fiber diet are typically part of the recovery plan to minimize straining during bowel movements. Cats that needed more extensive surgery, like a colopexy or tissue amputation, have a longer recovery but can still do well long-term.
The key variable isn’t the prolapse itself but how quickly it’s treated. A cat that gets veterinary care within hours of a prolapse has an excellent chance of a full recovery. A cat left untreated for days is facing tissue death, possible sepsis, and a much harder road back to health, if recovery is possible at all.