My rabbit Alice lives in the living room with us and has free range of it. I spend lots of time with playing her but I've noticed this rather strange thing she does when she's playing on her own. She can be happily running around when all of a sudden she flops down on the floor. It looks like she's playing dead because as soon as she hears one of us move, she gets up again but my partner isn't convinced and is starting to get rather worried. Do any other rabbits do this?