Only seen one T.B. dog, a female. Nice little black dog but very skittish.
Can tell though, one time it took off from the owners hands to chase down a squirrel and in this route she was run over by a car.
All we heard was bang, bump, car jump off the ground in the rear and came to a halt but the bitch got on out and kept running for the squirrel and fear of being reprimanded possibly from it's owner. Thankfully after we found her we were looking all over her to see where she may have broken a bone or two but aside from some hairs on the top of her back/spine being burnt from the exhaust running down thru the car, there was nothing wrong with her.
We took her to the vet to make sure there were no internal bleedings etc and this was when I heard the vet tell me while my friend went to get the dog.
If I were to make a living taking care of pitbull dogs, I'd be broke. Damn dogs are almost indestructible. Yrs later after going into Captain America Ch dog and bringing my dogs nose in a cup off ice to put back on at 6am he reminded me of those words.. These dogs are special. They sure are.