2 1/2 weeks ago I got a 7 yr old staffie from a dog rescue centre?

Uchimataman asked: He is the most lovable affectionate dog. Great with people, house trained loves kids. Loves going in the car. Only 1 problem. Although I keep him on a lead, any other dog that comes up to him he attacks very aggresively. I know my fear could be causing it, [...]