A foursome of male cheetahs stalk the grasslands of South Africa's Kgalagadi Transfrontier Park, unconcerned with the antelope standing on the nearby riverbed.

The cats have a more formidable target in mind: A female named Corrine, lounging in the distance. The crew inches toward her, their slow, calculated movements almost robotic.

A split second later, the world's fastest land animals dart for their unsuspecting target, clawing and jumping at the lone female for several minutes. (Read why cheetahs are dangerously close to extinction.)

"It was like watching a gangster movie, being outnumbered four to one," Van Gruenen told Latest Sightings, a website that encourages safari-goers to post their pictures and videos.

Generally, when a female cheetah goes