One tip I read somewhere is that if it is attacking someone else (e.g. a child) never try to pull it off as it will cause much worse damage through tearing. Ins

One tip I read somewhere is that if it is attacking someone else (e.g. a child) never try to pull it off as it will cause much worse damage through tearing. Instead try to lift it by its hind legs (which disorients it) and punch it as hard as you can in the ribs (try to break them). Hopefully it will let go. If you're worried about yourself, some kind of implement (e.g. a stick). I often do this near me when I go out running as people let their dogs off the leash and they can sometimes be aggressive.