Help save Luther

Luther is a 7 year old male Papillion. On Monday 9-22-14 Luther was taken into the emergency vet because he wasn't eating. They admitted him right away and tests came back showing that he has major kidney failure. The doctors suspect that it could be leptospirosis, but the test results take a few days. He is showing signs of improvement with the medication he is on now, but it's a slow process. The doctors say he will need to be in critical care for at least 3-5 more days. The vet bills for 3 days are $5,000. We will do anything/pay anything to keep our little baby alive but we have a limited credit line. Anything you would be able to donate would be greatly appreciated. Luther is a fighter, he'll make it through this. Thank You.