I had a big red nose(?) Go after my buddies toddler when he was playing in his sandbox around 10 years ago. The new next door neighbor a woman in her 20s maybe 125 lbs had 2 of them. She had them on leash both freaking out trying to drag them in the house while carrying groceries and the big one slipped away.
Me and my buddy where sitting on a deck we had just built watching his son play with the tonka truck I had brought him and saw the dog running hard at his kid. We sprinted to try to stop it but the sandbox was on the farthest corner of the yard and it closed the difference first. Poor fucking kid got mauled horribly in the seconds before me and my friend made contact.
I got there first hit it hard with a framing hammer slid down and the fucking thing thankfully let go and turned on me. Latched onto the back of my left arm and bit down fucking hard. Bashed it's skull in with a framing hammer but it got me real good tore up the back of my left arm pretty bad
Rushed his kid to the hospital(thankfully 15 min away) lost a bunch of blood but thank fucking god made it. Had to take a couple weeks off work my arm was so bad. Poor kid was traumatized for a long time after but recovered well. Lots of stiches.
Turned out the dog was a "rescue"
and was used for dog fighting prior to that. My friend confronted the dumb **** owner shot the other dog later that day and got into a bunch of trouble over it.
Just my experience with pitbulls that have been bred for "game" and used for it. Having a dog that is bred for fighting as a pet is unpredictable you don't know when that set of drives will kick in and lead to situations like this. Same reason wild non domesticated animals make horrible pets.