I once saw two dogs fighting, not serious stuff like clamped jaws or anything, both had their dogs off the lead and they turned corners before the owners had got there. The man was wearing cammo and smoking a rollie and the woman was a bit posher and started shrieking her lungs out, she ran up to the scene and kicked the guys dog (to try and get it off her slightly smaller one) and the man proceeds to then walk up and boot her dog as some sort of leveller mid scrap.
Was very bizarre. Those dogs kinda gave up after a few lunges and tangles but what I'm sure most would agree is frightening is the lockjaw these Pitbulls have, you can hear someone in that video asking why it won't let go, seems like as soon as they clamp on you'll need either good luck or herculean finger strength to prise them off whatever they've bitten in to.