And they are even in adult sizes (up to 9 at least)
Stompeez. They pop up ears and mouths and eyes when you step. Or stomp as the case may be.
I’d provide a link, but they have a pop-up when you try to close the tab for the window that won’t go away without you clicking on it or closing the browser (at least in Firefox) and that might piss you off as much as it does me. So I’ll just tell you that they are at stompeez.com (which you probably could have sussed out on your own) and they are $20 each, buy 2 and get free shipping. They also have a few styles of puppies and other miscellaneous cute ‘n’ fuzzies. Probably made in China with lead filling.