'Born in the Wild' -- Moms Are Naked ... You're Afraid

Clark Gregg's seen all kinds of crazy stuff on "Agents of S.H.I.E.L.D" -- but nothing comes close to the new show called "Born in the Wild."

The upcoming docu-series reaffirms that old saying: The circle of life is beautiful ... until you have to watch a groaning, naked, pregnant lady squeeze out a baby on the banks of a babbling creek!