Please consult a qualified, experienced trainer when introducing 2 high drive, intense working dogs, especially if 1 has a history of fights/no social greeting skills or has never interacted with a dog or rarely does (this dutch has never interacted with a dog besides the other dog in the home)....you can really create chaos quickly if you dont know what you doing....words of advice, if a dog does not respect the leash.....the dogs dont meet, practice at a greater distance, correct fairly for known commands, rudeness.....this safe process can take a week or 2 with some dogs but when done properly like in this video, it typically takes 1020 minutes or so....do not rush this, the dog must respect the owner/leash and other dog and only then will they meet, if possible of course and all k9 behaviors/communication is healthy.....know your dog and the other dog well and dont put a dog in this position until you create confidence/rules/fun through training...then give it a try!!!