I had a 12 1/2 yr old buff cocker spaniel who had to be put down do to a snapped ligament in his knee from a fall and internal bleeding caused also from the fall or leukemia returning. A couple years ago we noticed he had problems getting in to the car,his behind would wobble and we took him to the vets. He was treated and pulled through fine. We had no problems until what was mentinoed above. I have had problems finding info on leukemia. Would someone kindly post a link or give me any info you might have?