The vets not ready to give up on Yoshi yet, I've not seen this vet before ( Vicki's back tomorrow ) but she knows Yoshi because she's helped with him and knows about all the research Vicki's been doing for him. In light of how far he's come and how sudden his decline has been she thinks it could be thyrotoxicosis and that it's worth giving him plenty of intensive care to give him a chance to come out of it. So he's been admitted, she said she'd put him in an incubator straight away to give him more oxygen, an intravenous drip to keep his fluids up and round the clock nursing & feeding. Fingers crossed for our beautiful boy.