Not only herbivores need to be careful at a waterhole. When the head is lowered to the water surface, the eyes have a limited view. This is not a comfortable situation, even for predators. A single lioness with cubs may be attacked by a large hyena clan or a big crocodile may jump out of the pond. Therefore, quenching thirst is quick and no one should forget observing the surroundings. Hwange NP, Zimbabwe