My kids would play pretty rough with our very gentle dog. However, I was always a bit on edge with it. And warned them if he ever bit one of them the dog would need to be put to sleep.
He never did. Although the time they put the pink Tutu on him I would have perhaps set aside the rule! ;)
Putting him to sleep yes, slamming him in the head with a weapon immediately, no.
But at this point I am the “dangerous” one even though I have simply defended the defenseless.
Oh, byw, I am a mom.