The vets now think that the next course of action for investigating the weight loss would be an endoscopy
Luckily we have a vet hospital just along the road from us, so called one of the vets there and had a chat. Basically, there are two options - an endoscopy where they will be able to get a small biopsy, or open him up and get a few larger biopsies. I have to phone them this afternoon but just can't decide what to do for the best. Looking at him now, I can't justify opening him up as he doesn't appear unwell but on the other hand, if I opt for an endoscopy and it isn't conclusive, we may then have to open him up anyway and that would mean 2 anaesthetics
Thank god for insurance - its certainly going to be taking a bit of a battering over this one