Huge crocodile hunts Impala drinking in dam

This is the horrifying moment a crocodile launches a surprise attack on a herd of thirsty Impalas drinking by a dam.

The footage shows the crocodile suddenly emerging from the water and catching one the Impalas as the other members of the herd run away.

The crocodile then drags the Impala into the water and swims away with the prey in its jaws.

The clip was filmed on February 6 in Kruger National Park.