I have a 5 month old mini dash (male) and i have a large yard (fenced in )which he excercises in. The next door neighbor has a female pit bull which they also let out to excersise When both dogs are outside they socialize at the fence and my dog wont obey when i call him. Hes too fast and i cant catch him. Im afraid the other dog will mall him through the fence with her claws. There are spaces in the fence. How do i teach my dog to come?