I was about to flippantly say "of course not", but further youtube browsing (such as http://www.youtube.com/watch?v=LqweX2xG8ns) opens up a labyrinth of crazy and now I'm confused.
Those should jiggle, furry. There's no point bouncing if they don't jiggle. Christ I'm thinking about this too much. But Teddy Ruxpin popped his tape out if you know what I mean.