[wemple2]

First. I want to tell you how very sorry I am that your baby is going through this. There must be some sort of stricture, stenosis or even a fissure. I know he is only a baby, but do they do endoscopes on puppies? Or do they have to do an exploratory surgery to check his bowels? I know they do upper GI scopes/EGD's but what about colonoscopy, of course it would have to be very tiny...
What is the term...where a dog's intestine gets twisted? Inter...something?
My suggestion, if an endoscope is not possible...how about a barium colon x-ray? There has to be a way to find out why it hurts Thor so much to poop...and I'm wondering if his bout of constipation as a new born isn't a clue???
My thoughts and prayers...to you and Thor...