I currently have a 14 year old blue heeler mix, who is the best dog I could ever expect to own. At some point.....I am going to need a new puppy. I'm thinkin that I would like to get a purebred blue heeler. The dog would be mainly for a companion, and would not be penned up or tied up. I enjoy training and giving my dogs lot's of attention. We usually stick together like glue. With blue heelers being active cattle herding dogs, is it fair to have one as a pet, even though there are no cattle to herd?