Wearing animal hats is now standard procedure in our household.
Bunny: (in her monkey-hat) "Ooooh, oooh! Aaah! Aaaah!" (you know, monkey sounds)
Squirt: (in her giraffe-hat) "Um, Mommy? What sound does a giraffe make?"
Me Again: "Giraffes are pretty quiet, I guess. And that's always a good idea... to be quiet."
Squirt: (in her giraffe-hat) "Ooooh, oooh! Aaah! Aaaah!"
A giraffe that makes monkey sounds- naturally.