Season 2 - Episode Guide

Smart, sensitive and family-oriented, our wild ape relatives rely on each other to learn — and redefine — the secrets of survival.

Curved talons, hooked beaks, killer eyesight: these aerial assassins have the most sophisticated tools for hunting prey at their disposal.

To rule some of the planet's most hostile lands, bears can't lean solely on brute force: it takes both brains and brawn to reach the top.

Dolphins use their intelligence to form complex undersea societies, come up with resourceful hunting techniques — and indulge in their dark side.