Straining and a Visible Bulge: Understanding Rectal Prolapse in Dogs

In this guide

Rectal prolapse is an alarming sight, part of the rectal tissue turning inside out and protruding visibly from the anus, but it is a mechanical problem with a generally good outcome when treated promptly.

What causes it

• Prolonged or repeated straining, most often from severe diarrhoea, constipation, or a heavy intestinal parasite burden
• Straining during difficult labour
• Underlying conditions affecting the pelvic muscles or nerves
• Young puppies with a heavy worm burden are particularly prone, since parasites are one of the most common underlying triggers

What it looks like

• A pink or reddish tube like mass protruding from the anus, most visible during or right after straining to defecate
• In mild cases, the tissue may retract on its own between episodes
• In more severe cases, the tissue remains protruded, and can become dry, swollen, or discoloured if exposed for too long
• Visible discomfort, straining, or licking at the area

First response and why speed matters

If the prolapsed tissue is visible and dry, keeping it moist with a clean, damp cloth or saline while arranging immediate veterinary care helps protect it until treatment. Exposed rectal tissue can become damaged or lose blood supply the longer it remains outside the body, so this should be treated as an urgent same day vet visit rather than something to monitor overnight.

Treatment

Mild, early prolapses are often gently repositioned by a vet, sometimes with a temporary stitch placed to keep the tissue in place while healing occurs. More severe or recurrent cases, or tissue that has been damaged, may need surgical correction. Successfully treating the underlying cause of straining, whether that is deworming, treating diarrhoea, or managing constipation, is essential, since the prolapse will likely recur if the root cause is not addressed.

Common Questions

Q: Can rectal prolapse happen more than once in the same dog? A: Yes, especially if the underlying cause of straining, such as parasites or chronic diarrhoea, is not fully resolved alongside the initial treatment.

Q: Is surgery always required for rectal prolapse? A: No, many mild, early cases resolve with manual repositioning and treatment of the root cause, without needing surgical correction.

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