I understand. I would never own one, personally. I've seen how, otherwise perfectly normal dog owners, in the past, who got one, and it went south, and they were just totally surprised. Thankfully, no humans were killed. I do think that what they were bred to do originally, and still are being bred to do, has a lot to do with this, for lack of a better word, phenomena. Pits, unlike most other dogs, don't seem to give any signs, to the person who is fixing to be attacked, or is witnessing an attack, on another animal. "It came out of nowhere!" Is the standard statement. My husband was in his yard or in front of it, with our GSD. Our GSD was one of the large, old-fashioned GSDs. None of this hip sloping stuff they do today. I digress, my husband was out near the road in front of his home, at the time, and out of nowhere the neighbor's pit showed up, making a bee line, straight at him. Our GSD, rolled up between them, and with his body weight,rolled the Pit, and engaged him, until, the pit backed off and ran back home. Again, our GSD was very big, and in excellent shape, at the time. However, many times dogs will give a various signs before biting;
1) Some dogs will yawn, and lick their lips (more than once). They are uncomfortable with a situation.
2) Eye contact:
Avoidance of eye contact. Could be a more timid dog and a fear biter. Fear biters usually cower, and tuck their tails.
Direct eye contact is a more dominant dog, and usually goes along with #3, below.
3) Erect, slowly wagging tail, body still/stiff. (If a dog is happy, their whole body wags), direct eye contact.
4) Hackles raised. Big sign that a dog is unhappy and may bite. (Hackles = fur along neck behind head to withers).
5) If you see the whites of a dog's,(or horse's), eyes, they are anxious and uncomfortable and can lash out.
6) Growl and/or show of teeth. (Obvious)
https://stories.barkpost.com/bite-prevention/
https://www.thespruce.com/signs-a-dog-may-bite-1118537