I went back and took the black lab out for a while. He's such a sweetheart. When he came in, he was so scared, they didn't do a heartworm test. I asked them to do one before I made the decision. Well, he's positive What do I do? There is a vet that will do all the treatment for free. If he didn't make it, I don't think I could handle it. But, I hate not to give him a chance. It seems lately, I can't win.