we think, well, how the hell did it do that? that's crazy. >> i was sort of waiting to find out what camera trick they did to make it look so smooth. >> amazingly, the kung fu bear is 100% factually accurate. >> as it turns out, it's just a very talented bear. >> for years claude the bear has been wowing visitors in japan with his mastery of martial arts. claude taught himself serious stick skills after zookeepers gave him a 5-foot staff to play with shortly after his arrival in 2002. >> the poor bear is like bored out of his mind. well, i've got this stick and i'm really smart. >> but claude doesn't gain worldwide fame until teenager alex graham visits the zoo during a family trip in 2009. >> the zoo is generally really quiet. we were looking around. and i just walk off by myself. >> soon, alex comes face-to-face with claude the bear. >> so, i take out my camera. >> alex can't believe his eyes