I agree with whast both Candy and Karen have told you to do. I did that when I got my second dog and there wasn't and hasn't been any problems.

Just thought I'd point out however that although a Staffi looks like a pitbull they aren't, they'er two different breeds but because of the like apperances the staffi gets mistaken for pits all the time...I know I did the first couple of times that I saw staffis. But like most dogs you get the good ones and the bad, I've met a couple from each catagory for the staffis and when they're nice they're really really nice, wouldn't hurt a fly unless prompted to and the same could be said the other way.