Sorry for any repeat, My 2 yr. old Standard Poodle was just diagnosed with Acute Kidney failure. He was absolutely fine one day & the next day at death's door! He was in the hospital for 3 days on IV fluids, which they had to stop because they were affecting his heart. His CR #'s got as high as 6.8, not sure on the BUN. But they let me take him home with SUBQ fluids & antibiotics & few other things. His CR dropped to 4.4 & BUN 88 the day he came home. 2 days later his CR dropped to 2.2, not sure where the BUN is. We've spent $6000+ so far & not a single test has come back positive as to what caused this. They're thinking it's a bacteria called Leptospirosis, which will hopefully be confirmed or not with his next blood test in a week. They say he's operating on 25% kidney function & we won't know if there's permanent damage for several weeks. His energy level is back, he's eating. I'm cooking food for him now, especially since I really don't know if food did this to him or bacteria. I'm just sick. All that I've read here is a bit discouraging. Am I going through all of this just to watch him die?