What Does a Panda Say?

Gray LOVES animals, and animal sounds. To keep him entertained during diaper changes, waiting in lines, etc., we often play the animal sounds game. I ask him what the animal says, and he tells me -- pretty simple. Sometimes, I say an animal that he doesn't know the sound to, and he promptly makes up an answer. Past answers have included giraffes say "raff", hippos say "HIP-po!", and zebras say "bra-bra" Here's the made-up answer of the day:

Mom: What does a panda say?
Gray: .... (thinks about it a second, then with a big smile:) "Skidoosh!!!!"

Thank you, Kung Fu Panda.