Our aging husky has a mass on/near his lung. We don't know how much time he has left. When the time comes, we would like to get a pup, but not sure of which breed. Doesn't have to be pure--and we are at the very early stages of thinking about it. It HAS to get along well with other animals--size really doesn't matter. We do not have a fenced-in yard, and can keep one indoors or out. Any suggestions? We are learning more about LGD's.