Lol, see, all these wildlife experts etc, bet those with them cages have studied sharks in the wild for thousands of hours, and are now thinking 'Kin el, I never thought they'd do that!'
Said it before, NO-ONE knows what's going on inside a wild animals head, don't matter how long they've studied them. Same thing applies to dogs. How many times have we all heard 'I know my dog inside out, but I never thought he'd bite someone'. ?