Hi, I have a seven month old beddy lurcher bitch , everything going well with the training , sit heal etc but just in the last couple of days if she spies another dog at the other side of the park/field, she runs over and takes no notice of my commands to come to heal or return, once she has had a sniff and a bit of a play, she returns, obviously I cannot punnish her or she thinks it is for returning. But how can I get her to stop this before it escalates, cheers David.