Blog post: swansont: One Way to Avoid a Cat-astrophe

So what intrigued and, quite frankly, baffled physicists for so long? The surprising observation is that cats can still turn over in free-fall even when they are released at rest, i.e. with no initial rotation! Ironically, this probably freaks out physicists far more than non-physicists, because at first glance it appears to be a violation of the conservation of angular momentum.