It would depend on the relative health and age.
human
depends of breed,if bengal cat vs chihuahua than the cat easily won,if gsd vs persian than gsd easily however most dog breeds would win against cats because of strength.
what a sick question, its apauling somebody would ask such a question that's disturbing that somebody would want to know. the answer is if the gsd dodged the first rotty bite and got the rotty from behing the rotty would be a gonna but what kind of sick person would want to know that. Rottweiler wins. I can't imagine a gsd wich is beat the rottweiler.
Sonic would win the fight, but sora would put in one hell of a fight.
John cena would win in a fist fight an 50 cent would win in a in a gun fight
I would win.
In an all-out fight (not race) a bear would win. In a race of speed, obviously the cheetah would win.
pacman would win and they are going to fight in may 2012
I think that Lady Gaga would win that fight!
In a fight, Confucius would win as Buddha is an enlightened pacifist and would not fight back.
a seal would win.
chimp would win.....