### Instruction: Who is Toto?
### Input: Toto is a fictional dog in L. Frank Baum's Oz series of children's books, and works derived from them. His name is pronounced with a long "O", a homophone of "toe toe". He was originally a small terrier drawn by W. W. Denslow for the first edition of The Wonderful Wizard of Oz (1900). He reappears in numerous adaptations, such as The Wizard of Oz (1939) and The Wiz (1978).
### Response: Toto may refer to many things but a popular reference is to a small dog in the movie The Wonderful Wizard of Oz (1900). Toto belongs to Dorothy Gale, the heroine, and plays a key role at several points in the movie including running away (which causes Dorothy to chase after him and get pulled into the story) and pulling the curtain back to reveal that the Wizard is just an old man.