[alternatives?]

“Unless this guy laid down on the ground and allowed the dog to rip his throat out, it is highly unlikely that this dog represented any sort of “risk his life” scenario to this guy.”

Really? The dog is large enough to bite someone in the balls. The dog is also large enough to bite and cut the femoral artery.

[Navy Patriot]

The Dog was easily large enough to trip, or cause the deliveryman to fall.

The fall it's self can kill, or render the person temporarily incapable of defending themselves on the ground, where the Dog can now kill easily.

[DiogenesLamp]

Really? The dog is large enough to bite someone in the balls. The dog is also large enough to bite and cut the femoral artery.

You know of many cases in which some sort of beagle mix ripped a man's leg off? :)

My wife has several Chihuahuas that can strip the flesh off of a man's bones in under three minutes. Or at least they act like they can.