SIERRA VISTA — Tuesday, Shelia Dahoney was visiting her daughter’s house in the Palominas area when she looked out to what she described as a “teeny front yard” and saw a stray dog doing what she thought was taking care of some natural business. But upon going out in the yard, Dahoney notice a puppy hanging from the female dog. The dog, which she described as a Border Collie mix, was giving birth and having a difficult time doing it. About five-feet away was a puppy which already had been born. Dahoney, a receptionist at the Coronado Veterinarian Hospital, now...