 Also, why do alligators have such disgusting table manners? If we ate the contents of their larders, we'd be horribly sick. So how come they're doing fine? And we introduce you to a new hybrid apex predator, the growler. Also, we look at the maths of scamming, which adds up to some astonishingly big bucks in certain countries. That, plus other unexpected elements, coming up soon. MUSIC