Our 11 year old Cairn terrier has just been diagnosed with diabetes. One day he was his normal terrier self barking at the ne'er do Wells daring to pass our 6feet high garden fence. Walking for miles with DH then snuggling up to me for a cuddle and a snooze before dinner and another cuddle and a snooze after dinner. We took him to the vet for what we thought was a UTI only for him to be rushed into doggy hospital intensive care with dangerously high glucose levels. We were offered euthanasia once he had been disgnosed but wanted to give him chance. After a few days stay he was allowed home with a sensor stuck to his tummy and we were told he had gone blind v recently. This is a shock of great magnitude. He went into the kennels the weekend before and they mentioned he was slowing down but neither they or I had any inkling he was so ill. We have to go back on Wednesday for a check up but his blood glucose is still very high. The blindness is the saddest part. Hes no longer the little disobedient devil he was but this sad wreck sleeping and scared to move. Are we doing the right thing? Is he sad as well as unwell? Will things get better for him? Any advice? I don't know how to help him.