I don't know, I thought it had to open to let them back out! But apparently, they can just come out through the button.

[How was he supposed to know that was an option??]

I don't think Mitzi gets tired. She just wants to eat and play all the time- I'm not gonna have money to feed myself at this rate!

[The screaming in the background continues, followed by the sounds of a struggle as Joseph tries to keep his PokeGear up to his ear while also keeping Mitzi out of his backpack.]