On Jan. 8 at 10 p.m. ET, Discovery premieres the first installment of Africa, a seven-part coproduction with the BBC from the documentary team behind Life narrated by Forest Whitaker. Below is a first look at what’s been described as “the most violent giraffe fight ever filmed,” featured in that first hour, “Kalahari.” It took the crew four weeks to capture the 90-second desert knockout in which two giraffes use their six-foot long necks as weapons and exchange blows. It was the only giraffe fight they saw the month they were there. You’ve got to see it to believe it.