If you’re calling coyotes, foxes, etc., yes, a second gun can help at close range, where your long, heavy rifle is a handicap. Some shooters even use a handgun at close range, and others use a shotgun with large bird shot like No. 2s or BBs, or a quicker rifle, such as a light lever action in a handgun caliber. You could even use one all-around rifle such as a lighter, shorter .223 with a medium-power scope.