Well, seeing as the dog you have your eye on is a mix of a Basenji and a Shepherd, you might possibly have a big handful on your hands since both are active, clever dogs and active, clever dogs who are not engaged correctly will destroy stuff out of boredom. On the other hand, it IS a mixed breed and you may luck out and get a dog with the best of both temperaments and none of the hyperactivity. Can the shelter tell you more about the dog and it's temperament from the time it's spent in there? It would be really helpful. From all I've read about Basenjis, they seem like dogs with strong preferences.