Personally Mate i wouldn go round all guns blazing, not that im saying they are dangerous or anything, im just saying what if he didnt nick your dog? and you goin round with guns blazing wnt help atal. If anythin will make it 100 times worse, maybe this man is a sound, he was decent enough to stop and have a chat with your woman, take a walk round explian the siuation and see what happens, it may be a lot simpler than u think..