When animals of astounding ability connect with each other and the world around them there is a "moment of impact." The world is filled with these unique moments created by animals whose abilities and behaviors are incredible to behold, like the violent collision of cheetah with gazelle, the blink-of-an-eye strike of a deadly cobra and the amazing dexterity of an elephant's trunk as it feeds, fights or reaches out with affection. But how do these creatures accomplish such extraordinary feats? Live action footage only reveals part of the answer. Using the latest technologies, HD camera lenses and computer graphics, this two-part series will take us inside the animal to present an innovative and revolutionary look at the bioengineering of "how animals work." From Africa's Serengeti to California's grasslands, some of nature's most dramatic moments are caught, examined and fractured into their unique parts within creatures great and small to reveal the amazing abilities that give each animal the instinct, intelligence and brute prowess to survive. From elaborate impact sequences that spin around animals caught in a frozen moment to animations that go inside their bodies, a unique view of animals' amazing biomechanics is revealed.