Who knows why animals do the things that they do, especially when they find better companionship in a human than their own kind. That's exactly what happened when a man met Mario the Goose at a zoo. For some reason a bond was made that just amazes everyone. And the man has no problem visiting Mario every day if at all possible. Mario is  even protective, warding off dogs.

The CBS News segment, 'On the Road' with Steve Hartmann has the story: