The "I" of I Ching means lizard. "Ching" is generic for "book," as in the "Tao Te Ching." Some scholars believe that the lizard the ancient Chinese had in mind was the chameleon, which is able to change its color to match its environment. Since the I Ching is the "Book of Changes," the chameleon can be seen as the totem animal of the changeling principle, and of one who is able to morph, mutate and adapt to a rapidly changing world.