We have an extremely nervous rescue greyhound who after two years has quite a lot of confidence in the house but who employs the ostrich solution (I am not going to look at you so you can't see me) when we are outside. I haven't yet attempted to try to train her to come as she spooks so easily and I daren't let her off the lead. She is not food or toy orientated and I wondered how other people have coped with training when treats and toys aren't an option.