Dogs are pretty tough animals. I wouldnt drop a caliber from my collection based solely on performance vs. a large dog. Personally I think the officers would have done better spraying the dog with some sort of repellant, or amonia, then snare it while it is dissoriented and groggy. Another option would have been to seal off the area, surround it with stereo's and play Kevin Federline's cd as loud as possible continuosly until the dog came out cowering down with his tail between his legs.