In the dark recesses of the Peruvian rain-forest stands an unwavering Brazil nut tree - a titan among trees. For it to reproduce, this awe-inspiring pillar of strength relies on a series of intricate relationships with animals and insects found only in the wild. Only one critter has teeth strong enough to crack open the tree's tough fruit - the Agouti. For its survival, the Brazil nut relies on this tenacous rodent to disperse its seeds throughout the Amazon. While carpenter bees are the only insects strong enough to open and pollenate the tree's flowers. And these are just two of the Brazil nut's many allies. Without this incredible tree, many species will go extinct.