Nothing beats experience. I think Simba only needs more experiences, because it works well with my dog. Beethoven (she's a girl beyond the name) is also like that the first time I have her meet other dogs. But as she get to meet other dogs more often, she tamed down. Simba can do it, he's a good dog who luvs u and will do everything to please u. And of course, obedience classes can help too. Good luck