Some creatures stop at nothing when it comes to using other animals to get ahead. From Zombie moose, to parasites that take over the eyestalks of snails and mind-controlled rats chasing cats, naturalist Dan ONeil explores the weird world of alien invaders

When it comes to survival, sometimes taking over another animal is the only way to get a step ahead. Naturalist Dan ONeil investigates the weird and wonderful world of mutant animals, mind controlling fungus, and a fish that transforms itself into a set of testes.

Ruthless predators and powerful prey are embroiled in rivalry, betrayal and battle, in a never-ending crusade for survival, with characters so wild and ambitious and conflict so cutthroat, that no fiction can do it justice. Each episode presents the battle from one character's point of view, exposing the front lines of clan warfare – from a mother’s sacrifice to a father’s rage at his own son.

From the Andes mountains to the windswept coastline, Chile is home to a spectacular array of amazing wildlife that thrives in these extreme landscapes. Nowhere else in the world can you find some of these unique and interesting species.

Some creatures stop at nothing when it comes to using other animals to get ahead. From Zombie moose, to parasites that take over the eyestalks of snails and mind-controlled rats chasing cats, naturalist Dan ONeil explores the weird world of alien invaders

Thrilling tales of unbridled natural forces, danger and unconventional wonders in America’s wildest spaces. Go beyond the guidebooks and discover hidden spaces where nature rules.

The survival rituals of the charismatic creatures of Botswana are as mysterious, elaborate and varied as the animals themselves.