Well I wasn't standing there while the attack was happening, but I don't see anything in that video that looks staged. Dog is attacking a mule, looks like the guy with the stick either owns the mule of has some concern for it's safety (and his own probably) and is trying to whack attacking dog with stick. After mule gets ticked off enough to grab the relentless dog, pin it to the ground and bite the heck out of it, the man is still whacking the dog to make the sure the darn thing doesn't get up for another try at the mule or him. I guess it could be staged, but it just doesn't look it to me. It doesn't look like the dog was being encouraged to fight, and if they were staging a fight between the dog and a dog killing mule, why would the guy be whacking at the dog trying to stop it, he would just be letting the dog and mule fight it out.