There are elephants in Arizona, although I bet the zoo officials would be mighty peeved if I dropped one
Actually, it's just a really big rifle. For hunting in N. America, you really don't need more than a .338 Win Mag/.340 Weatherby Mag or something in that neighborhood. However, many people carry more when hunting bigger Alaskan brown bears/grizzlys. I hope to make it to Alaska for a hunt. And a dream would be to make it to Africa and hunt there. Many nations in Africa will not let you hunt one of the Big 5 (elephant, rhino, cape buffalo, lion, leapard) with a gun smaller than a .375. So you would have to have something big for that.
Until then, I'll take it elk hunting