Let your pit bull take care of himself then. He’s not scared of no chihuahua is he? Or of recently pregnant 7 pound house cats?
No, we’re supposed to take care of our dogs. Letting the dog (especially a pit bull) get a taste of blood and acting vicious might engrain it as a habit. Not a good idea.
I don’t know if he’s scared of them, I have never put him in a situation where he’d have to defend himself from one.
Have you ever seen someone try to fight off a bee, screaming and flailing and backing into things to avoid getting stung?
7 pounds may not seem like that much until it’s headed straight for your crotch, with five of it’s six ends pointy and sharp.