How we cite our quotes: All quotations are from The Wizard of Oz.
Quote #1
AUNTIE EM: I'm afraid poor Toto will have to go.
Grown-ups lie sometimes. Dorothy is depending on Aunt Em and Uncle Henry to protect her dog, and they can't. It's one of the first big disappointments in life – realizing that your parents aren't perfect – and in this case, it prompts Dorothy to start her journey.
Quote #2
PROFESSOR MARVEL: Professor Marvel never guesses. He knows!
This is a lie being used for good. Notice that he hides her picture with Aunt Em after he looks at it: maybe a way to bring in the authorities if he can't convince her to go home? In any case, you can see this guy really looking out for the "poor little kid" and willing to use some razzle-dazzle to send her somewhere safe.
Quote #3
GLINDA: Oh. Well, is that the witch?
DOROTHY: Who, Toto? Toto's my dog!
Dorothy never lies, of course, because she's a good girl. But it also shows that anyone can be fooled, even Glinda, who's really holding all the cards in Oz and who you wouldn't expect to be easily deceived. Goes to show you that anything is possible in Oz.