As they report in the Journal of Mammalogy, they found that as the female lechwe got older, the sex and the birth weight of their young steadily shifted.
At the edge of a sprawling grassland, a pair of hoofed grazers resembling horses, an antelopelike notoungulate and a ground sloth feed quietly, oblivious to their impending doom.
The Kalahari Gemsbok National Park together with the Gemsbok National Park in Botswana, makes up Africa's first transfrontier game park, known as the Kgalagadi Transfrontier Park.
And spectators found it whenever he played, with his elegant gazelle runs, his leaps and accelerations, his classy back-heels and his long, loping passes from midfield.
If you were a hunter-gatherer living in 10,000 BCE, you had no reason to care about the antelopes you were gonna hunt in 3 years – all that mattered was the one in front of you right now.