We have an 18 month old staff/collie/maybe something else(!) cross. He is a lovely dog most of the time, very good with kids, quite passive, generally submissive with other dogs. We got him from a shelter as a puppy. He walks well on a halti (pulls a bit on a regular lead). He is trained to sit, wait (to some extent), lay down - but he has never got on with recall. A couple of times he has managed to get out of the house or slip off his collar (pre-halti days) and tears around with glee, which is pretty scary and obviously not good. The only way to catch him has been to wait for him to approach another dog and grab him- he never returns voluntarily. In the dog park he won't come back either - doesn't matter what treats you offer, he is just not interested. At the training school we used he just wouldn't play ball either. We thought about getting a behaviourist in, but really can't afford it. Any ideas anyone ?