I am hoping someone with experience would be able to help me with this problem. I have a one year old male mix breed named Raylan (my guess is more hunting breeds he visibly has southern curr in him and howls like a hound) and he is very mild mannered indoors and typically is great with other dogs. However when he is outside in play mode, on a couple of occasions Raylan has either instigated a dog to get overly aggressive with him and on one occasion he has been the "aggressor". Now I don't mean actual mauling but the behavior was no doubt beyond just playing. I am starting to realize that what is changing the behavior of other dogs from playing with him to getting aggressive with him is because he is WAY to vocal of a player. He isn't snarling (although he did that 1 time I spoke of above) but his howling when excited turns the other dogs off. It clicked this morning when my roomate's German Shepherd started playing with him and once Raylan started his excited howling, the German just came to my side and was done with him. My question is what would be the proper approach to fixing this? I don't want to yell at him every time he gets excited and think that playing is wrong. I want him to play with other dogs, he just needs to pipe down a bit and unfortunately his howling is a strong part of his nature. Not sure what to do!