Not as far as I can tell, no.
Pit? Yes.
I have one that looks just like that laying next to my chair. Half Ridgeback, half pit. Smartest and friendliest dog I have known. But yes, at 80 plus pounds it was quite the tug on the leash when he was young. A harness was used back then along with a strong leash. Now a piece of yarn would be enough.