LOL. I have 2 game bread pit bulls, but they cannot be together.
My female has only 2 speeds: Snuggle and War. She is not very athletic (as far as Pit Bulls go) is not a particularly hard biter. However she is not afraid of anything.
On the other hand, my male, his father was a Grand Champion (IE won 5 documented big money match winner) as was grandfather, and Rom mother (Rom =register of merit,....that means you gave birth to at least 3 champions). I do not approve of dog fighting, however the best dogs I have ever owned came from game bread lines. He is incredibly athletic and bites like an alligator. He is also 15 lbs heavier than my female. Fortunately, he is very laid back, and has never been aggressive w/ people or dogs. Having said that, he won't star a fight, but he will definitely finish one.
Several years ago I built what I thought was a bullet proof pen for my female, and I left my male on a tie out. My dogs are indoor dogs, but I try and give them plenty of time outside as well.
Somehow, my female chewed her way through the steel double re-inforced pen, and attacked my male. I was gone for an hour and a half, and came home to find them fighting. My female was definitely on the loosing end. It looked as if they had gone over a full hour.
I brought her in and stayed up w/ her all night and eventually got some fluids into her and she was OK. Here is the crazy part: As soon as she could walk, what did she do? She went after my male again.
She thinks she is the Queen of all thing 4 legged. I have to keep my dogs crated, and only 1 can be loose (either in the house or back yard) and then I rotate their outdoor/indoor time.
I also try and give them some petting time every day as well. My female is especially cuddly, and will always try to snuggle in as close as she can (IE get on my lap).