I don't know if Willow is good off leash so far because she's only off leash in our fenced yard or house.. She reacts from within our yard when she sees a dog outside the fence and when on leash. She is happily interested in one of our neighbor dogs that she sees just about every day from within our fence. I take that as a very good sign! Her body language and bark are very friendly (her bark goes up an octave or so at least when she's happy barking! and it goes down very low when she is not happy.).