GENIHANNA asks: "I adopted an abandoned puppy hanging around my neighborhood. I had seen him for about a month and fed him a little. Eventually, he adopted me. I took him to the vet last week. Turns out he is around 2 years old, weighs about 30 pounds and is "as close to a pure-bred Cocker Spaniel as you can get" - that's the good news. I was told he has heartworms and according the doctor it will be "a couple hundred dollars for the treatment" - but the nurse handed me an estimate for closer to $1000! What do I do?"