Susan Pembroke Pines, FL 1/30/2010 10:30:39 AM I had my 11 3/4 year old maltese/chihuahua's urine tested and there was high levels of infection...he was put on antibiotics for 14 days and 2 weeks later had it tested again. It was clear but diluted. He has always been a big drinker so we are checking again in a week...recent exray's have also shown that his kidneys are somewhat enlarged. Can you go further to tell me what options I have to help his kidneys function normally?