Thank you so much for all your replies. You've all made me feel so much better ...and so much more hopeful!

I am going to take him to the vet's tomorrow evening and try to make him listen, but if he won't and still insists on putting Jack down, then we will have to take him to another vet and see if we can get him tested for what's wrong with his legs and loss of weight.

Do you think there is a probability that Jack may have had a mild stroke 4 months ago ie. when he collapsed, and has now had another one which has caused all these problems? Anyway, I'll put that idea to the vet tomorrow. I have been looking on the internet about stroke and prognosis is good: most dogs learn to live a 'normal' life even if they have mobility problems. If this is Jack's problem then I am very willing to buy him one of those doggy wheelchairs if it improves his quality of life!

Jack has definately improved today- he's sticking his nose into bins, is more alert, is extremely eager to have his dinner and electrolytes, seems brighter in himself and visually (bright eyes and alert head position). He even bought my Mum and I his Teddy when we came back from the garden. it must have been a huge effort for him- he was very wobbly, but there he was, Teddy in mouth, tail wagging and a beautiful expression on his face. Made my day!

Though I doubt the vet will think he's improved at all...

Thanks again and I'll let you know what happens at the vet's asap,

Samantha