I have got a dog to which I don't know the breed off. I have heard so many different breeds that he could be, i really am unsure what he is. Anyway, whenever I go the dog park and other dogs are running around, he just chases them and barks. He will stop but only when I call him over. This works until he seeing the dogs running again and he goes rate back to it. This won't really be a problem but it is every time a dog runs around (Chasing a ball, group of dogs running). I don't really want to have to call him over every time because I have had problems before where he wouldn't socialize with other dogs and he has just started too. His barking doesn't bother me but I am afraid it is bothering other people. He also barks at certain people. I don't know what it is about these people but he picks someone and does more a warning bark then the bark when he is chasing other dogs. I can get him to stop but I again have to call him to me. And again, he will just start again when I turn my attention away from him. I only these problems when I am out, mostly at the dog park. At home, I can get him to sit and be quiet where my other two dogs won't. I have been told he might have a herding dog or a type of hound dog in him but, again, I really don't know. Could what one of the breeds he might be be the reason he barks at the other dogs? Is there anything I can do or I am I just going to have to deal with it?