Shake, Rattle and Roll!! We saw alot of this for three days. I swear the shaking seemed to go on for hours! All in all we'd seen 3 of our 5 chrysalids doing this. As a matter of fact, it will come as no surprise that the one that had been dangling by a thread eventually fell down to the floor of the habitat. It's possible that it will still hatch unscathed so we'll have to wait and see. I tend to find myself checking on these guys numerous times a day, not knowing when they might hatch..that would be cool to see!