never yank their lead when he's around other dogs. by doing this you cause tension with the dog. he is tens when he meets another dog and then the leader corrects him. if you continue this behavior you may cause agression with your dog. its better to go to neutral ground and let the dogs see eachother off the leads. the end of your lead is the end of his territory which may cause him to want to defend it. then you give a tug whichcauses more negative sensation!