I use great pyreenes...trained to guard chickens they are incredible...I once saw an egret swop down beside one of my goats..the dogs were there and had the egret in his mouth in a flash..then the funny thing he saw the egret couldnt hurt anything and let him go...just dropped him and walked off...i also have electric fence about 4 acres for the chickens dogs and goats to roam on..i also have a shotgun and 22 ..and am not afraid to use them..