This Month in Photo of the Day: Animal Pictures

Cheetah siblings rest on a dune in the Kalahari Desert, which covers much of southern Africa, including parts of Botswana, Namibia, and South Africa. National Geographic Big Cats Explorer Gus Mills is examining Kalahari cheetahs using trackers, radios, and DNA analyses. This data helps park managers ensure the continued existence of the cheetahs and future monitoring.

Learn about National Geographic Explorer Gus Mills »
See more pictures of cheetahs in the Kalahari »