now back down
After a fantastic day yesterday when Yogi did a NORMAL poo (first one since before Christmas) I was brought back down again today when the old problem reoccured. He was fine, no sign anything admiss, then we headed out on our walk and immediatly he was struggling to go. We did walk about 1/2 a mile as he kept heading on and then stopping, and I thought the excersize might help him shift it, but nothing at all was happening. No diahorrea, thankfully no blood, nothing.
We very slowly walked home and I could tell he was uncomfortable, so provisionally booked an appt with the vet in the afternoon, hoping by then matters would have resolved, but no.
So he was admitted to have a manual evacuation under sedation again and they removed a solid ball of faeces and matted hair

, which he would not have been able to pass. He had an antibiotic injection as there was a small amount of bleeding. I've just got him home again and he immediatly did 2 fairly normal looking poos on the drive and seems much happier now.
The vet thinks this could have been triggered by me changing his diet from the w/d to the raw. I have been doing this incredibly gradually, watching to see if there was any problms before moving on to each stage, and he has been eating 100% raw and sweet potato for about 5 days and seemed to be improving all the time. Now I feel really bad in case I have brought this on him. However he wasn't really doing better on the w/d either. There was a lot of straining and he kept needing to go. Being a diet food as well he was having to eat vast quantities to even keep weight on him. Found out today he has lost weight again

and is down from 7.8 to 7.65kg.
The vet did agree to getting the colonoscopy done though, so this is booked for Tuesday morning. I have to take him in on monday evening so they can prep him over night. I've never had a dog in the vets overnight so not looking forward to this at all, but it is the only way we are going to get to the bottom (sorry) of this.