Some members of the Dōbutsuen are ubiquitous. Wherever you look in Japanese culture, you will find them in one incarnation or another; forming a motif. The chō is one animal that both the Japanese and the Chinese venerate, though it holds a very special place in Japanese folklore.
The chō represents a vast array of concepts and meanings in Japan. Butterflies represent the idea of metamorphosis and transformation, and traditionally, are also the souls of the dead, or carriers of souls from the land of the spirits. They can also be messengers. It is considered lucky to follow a butterfly, because it will lead you to the solution of a problem or mystery you are troubled with.