Hi Val, and Oliver!
Try not to feel sick about this, Val, it isn't as bad as you might think. Tell us more. What symptoms did you see that made you bring Oliver to the vet? And what did the vet do, test-wise, to arrive at the diabetes diagnosis? What did he say to do from here on?
This is a very manageable disease, and it just means that for now at least, Oliver might need you to give him insulin twice a day.
The keys to successful management are:
1 - Home testing of his blood glucose using a human glucometer.
2 - A proper low carbohydrate canned food diet.
3 - Twice a day insulin injections using a good insulin for cats like Lantus, Levemir or Prozinc where the dose is logical based on the numbers you get from testing.
We've all done this. Some of our cats eventually get off insulin and become diet-controlled. Even if that doesn't happen, Oliver can still live a long and happy life with two shots a day, just like a human diabetic can.
What's Oliver's status now? Is he home? What sort of BG numbers did the vet get when he tested Oliver? Has he prescribed treatment?
We can help you with this, Val.
Carl