It's no secret that crocodiles are extremely aggressive predators.
Their large jaws and general unpredictability are enough to make any animal think twice before picking a fight. However, this hippopotamus must not have gotten the memo about the dangers associated with getting too close to a hungry croc.
While observing animals in their natural habitat, National Geographic captured unbelievable footage of a hippo licking a crocodile. Shockingly, the predators didn't really react, but you'll still be cringing the whole time.