Hi Customer (name blocked for privacy)
I'm glad things are working OK now.
When a dog strains at trying to have a BM, if conditions are 'just wrong', and they do it long enough, (no, I don't know how long is enough) , the bowel may invert. This is very like a prolapse. It happens infrequently, but straining to go is always in the history somewhere.
The closest thing I can think of to describe this is a tube sock; you may push the toe back into the sock, keeping hold of the toe. After you have pushed it almost all the way in, you then pull the toe out, leaving most of the sock that was above the toe folded back into the tube. A prolapse would be if the folded part proruded a little way from the body
The intestine, because of the straining and probable increased peristalsis ( the normal movement of the gut) slips over the neighboring part of the gut. Just like the sock does when you start to tuck it into the upper part.
This continues until there is probably 6 to 10 inches of intestine, total, stuffed inside itself. Now we have an 'intessuception', which is a jim dandy bowel obstruction, and usually requires removal of most of the intestine involved in the structure, as it has, or is, dying because the blood supply has been pinched off.
Contrary to popular opinion, dogs still have BM's when completely obstructed. Stools are smaller, and become much softer, but by the time things do shut down, you have gone to the vet to find out what is wrong.
Well, I've probably wandered into more info than you wanted to know, but I wanted you to know what I was thinking about initially, and couldn't find a jumping off place.
As I said, I'm glad things are back to normal. Don't get worred about this whenever he has loose stools.
Best wishes
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