I'd sic my boa constrictor on it.
But, BTW, aren't pitbulls just another breed of terrier like wilful but lovable, little Scottie? As much as they may carry on, and as ferocious their reputation (for, e.g., the vice-like grip of their jaws), unless they've been mistreated or have rabies or distemper, they're just dogs.
In re the OP, are you afraid of dogs in general?