From the land of Pokemon, Hello Kitty, and all that is cute come some pretty dangerous creatures of the wild. From bears and wild boar, to centipedes and snakes, to sharks and poisonous jellyfish, there are all sorts of animals in Japan that can do you harm. But by far the most deadly to humans is the Japanese giant hornet. It is the largest of its kind in the world, with adults reaching close to 5 centimeters in length. The hornets are fast, aggressive and venomous, and are responsible for an average of up to 40 human fatalities a year in Japan.