Thanks so much. Yes, he's been on low calorie food. Not sure what is in it.
He's always been obsessive eater.

I can't see him living too long. It's difficult for me to tell the person here that I think it's time.

I just don't want to see him in pain.
He needs to go to the vet about this asap. (sunday here in heatwave so it won't be today)

I'll see how this goes. I will only be here a day or two longer so I'll try to observe. He's just too old and sad IMO.

I know this might sound like a strange question at the moment but would adding some fish oil (Omegas) help with any pain he might have?

I'll get the owner to talk to the vet about the B12. That makes perfect sense.

thanks again