Surgery cost for my best friend & cat Voo

Last night Voo's bladder became blocked and I rushed him to the emergency vet. He received a $3000 treatment to unblock his bladder and the vet discovered a bladder stone. The surgery to remove the stone is another $1500. Unfortunately I could barely afford the first treatment. The vet said that after the stone is removed from the bladder and Voo starts a prescribed diet the chance of him being completely fine and healthy is high!  
Voo is my best friend as I live alone. He means so much to me and is only turning 3 in April.  Please donate what you can to help cover the cost of the surgery.