These aren't 'real bears'. 'Real bears' do not allow you to stand 10 feet away with a camera (which you can tell from the moving angles etc.).
*sigh* Why do film makers think they can do this? 'Oooh look let's go sit 20 feet from this feeding Grizzly everyone!'
Oh my, watch this Grizzly scare away a nasty Wolf trying to steal his food! Ooops, almost tripped on the bear with my camera uh.....