This is 12 year old diabetic Maddy who is the first pet at 387 Vets to be issued with a special insulin administering pen. The new Caninsulin Vet Pens have only very recently been released on the market, and are specifically designed to make giving insulin doses to pets at home much easier and more accurate. The pens are pre-loaded with an insulin cartridge – just like a fountain pen – and the cartridge is simply replaced when empty. We look forward to hearing how Maddy and her owner get on!