Grate n Colorful Oz
Hutson Hawk
I'd agree. Although polar bears I'm pretty sure are the largest and most formidable land carnivore on the planet. Correct me if I'm wrong anyone.
Elephants are lucky, because once they've grown, they have removed themselves from being a prey to anything due to size alone. (with the obvious exception of us little mammals, also injury sickness etc.)
They are the sauropods of our age.