I've kicked bigger and angrier animals dead. When I was a teenager we had a small pack of roaming homeless dogs on our mountain. They had actually bitten a guy and had harrassed people on many occasions, but every summer there would be a mostly different pack. I don't know where the fuck they came from, goddamn hillbilly puppymills for all I know. Anyway, one day I was hauling ass out of a break in a thicket and found myself full charge and face to face with one of these fuckin dogs. Sumbitch probably weighted about 60-70lb. Without missing a beat I caught that motherfucker right under the jaw with a kick that sent him into a back flip. Called animal control and a few days later they came and picked him up, he was dead as fuck I guess.
Not really proud of it, but I'm happy I can say I didn't run. That dog would have fucked my ass up if I tried, safe bet at least.