Don't believe us? Listen to the man himself casually describe to TMZ Sports how he SPARS WITH LIONS as part of his training.
You heard us ... lions, like Simba and Mufasa except real and not animated ... meaning totally capable of ripping your face off at any minute.
He's conquered the wild before ... there's actually video of him wrestling with bears as a child ... but good news for all you Smokey's and Yogi's out there, KN says he's moved on to lions permanently.
If he's being serious (he can't be, right?) ... the rest of the UFC is in serious, serious trouble.