Unless you’ve been around a lot of them you probably wouldn’t.
This is just one of those things on which people will never agree.
I concur. I’ve even let my sister board her pit bull at my house when she and my bro-in-law went on vacations. With the understanding that if their dog tried to bite me, I would shoot it in the head with my .357 magnum revolver. The same goes for someone’s chihuahua. Or my own Akita.
It is very likely that most people who condemn the breed have not.
This is just one of those things on which people will never agree.
Just as with guns, some people hear only the bad news surrounding them and therefore believe all guns are bad. And both groups would be wring.