Every species has a secret weapon, a primal instinct that defines them - and it's not always as obvious as it seems. These are stories of the planet's incredible killers, extraordinary lovers, amazing heroes, soldiers and savages.

Every species has a secret weapon, a primal instinct that defines them - and it's not always as obvious as it seems. These are stories of the planet's incredible killers, extraordinary lovers, amazing heroes, soldiers and savages.

Every species has a secret weapon, a primal instinct that defines them - and it's not always as obvious as it seems. These are stories of the planet's incredible killers, extraordinary lovers, amazing heroes, soldiers and savages.