Thanks Chimpster. Sorry you lost your dogs mate. I still haven't heard from the vets and they should've closed by now. So perhaps he's still in surgery. Coping a bit better at this stage. On the see saw of wanting to hear from the vet and being scared shitless of the call.
Ok mid post the vet rang. He's coming out of anaesthetic ok. He's usually about a 10kg dog. Week and a half ago he was down to 9.5kg, today he was about 8.3. they removed a 1.3kg tumour from his spleen, will test what it is. So he's lost about a third of his weight this week. But he's probably got about a 4 week period before he's well again if he gets through the next 24 hours.
Huge weight lifted knowing he's still with us.