Honey badgers are notoriously fearless and tough animals, having been known to savagely attack their enemies when escape is impossible. Bee stings, porcupine quills, and animal bites rarely penetrate their skin. If horses, cattle, or Cape buffalos intrude upon a ratel's burrow, it will attack them. They are tireless in combat and can wear out much larger animals in physical confrontations. The aversion of most predators toward hunting honey badgers has led to the theory that the countershaded coats of cheetah kittens evolved in imitation of the honey badger's colouration to ward off predators.