Gu Gu obviously has at some point been abused by humans. For a panda bear to attack three people is unheard of. The people who have been attacked are not the smartest people in the world. The first was a 15 year old who "wanted to get a closer look". Are you serious kid! At 15 years old i think most kids know not to climb in a cage with a panda bear. I don't know the full story about that kid but if he had some kind of mental illness i'm sorry, but that is just stupid. The second person was a drunken tourist. Now if that isn't proof enough, that drinking while at a zoo isn't smart i don't know what is. The report says the tourist tried to hug the panda, First off how can you get that drunk and not be kicked out of the zoo. I know that him trying to hug the panda wasn't the first dumb thing he probably did while at the zoo. If he was drunk enough to try and hug a panda i wonder what he thought when he saw the tigers, or lions. Then Gu Gu struck again when the latest victim reportedly fell in when he tried to catch a toy panda doll he and his "Young Son" were playing catch with. Now why would you play catch in front of a panda bear pen, with a panda doll. Maybe Gu Gu thought they were hurting a baby panda and that's why he attacked when the victim fell in. What if his son would have fell in the pen. I feel sorry for all the victim that have been attacked, but people need to be a little smarter when they are out doing silly things and not thinking about the danger around them parents especially.So anyone who plans to go to the zoo in the near future think first before you try to hug a panda, or are playing catch next to the lions den, you get the point. I hope that everyone who has been attacked learns something from this and i wish them all well