"Wild animals?" asked Bunny.
"Yes."
"Pooh! I know what a Zoo is—it's a circus!" the little boy exclaimed.
"Well, it's partly like that," said his mother. "But that isn't all of Aunt Lu's letter."
"What else does she say?" asked Sue.
"Why, she writes that she has a surprise for you."
"Oh, what is it?" asked Bunny.
"Tell us!" begged Sue.
"Aunt Lu doesn't say," said Mrs. Brown. "You will have to wait until you get to Aunt Lu's city home. Then you'll find out what the surprise is."
Bunny and Sue tried all that day to guess, but of course they could not tell whether they had guessed right or not.