Ultimate Animal Countdown

Teeth and claws are standard issue for most of the world's animals, but a small band of elite warriors have upgraded their armaments. This is biological warfare - gone wild.

Nat Geo WILD goes head to head with the ultimate top 10 warrior males in the natural world to discover whose fights last longest. From angry elephants to territorial chimps, discover that all's fair in love and war for fighters in the Ultimate Animal Countdown.

Daring, dangerous and deadly. Sex in the animal kingdom is about much more than making babies. Go between the sheets with the top ten sexual athletes of the natural world.

Nothing's safe when the world's wildest flip their lid. We're counting down the top ten ultimate animal attackers to find who creates the most carnage.

From ferocious dinner parties to plagues of Biblical proportion, we're counting down the top ten ultimate swarms in the natural world to prove that sometimes size really does matter.

From hyena butter to hydrogen cyanide, we're counting down the ultimate top ten smelliest animals in the natural world to find who lets rip with the world's wildest whiffs.

Human daredevils are addicted to adrenaline but some animals put their lives on the line every day - not for fun but survival. We're counting down the top ten adrenaline junkies of the animal world.

A single drop of venom contains agony, destruction, and death. Poison is a terrifying weapon for attack or defence. We're counting down the ten most dangerous venomous animals on the planet

Even the hardest humans are wimps compared to the toughest creatures on the planet. We're counting down the top ten survivors to find the animal with the most extraordinary endurance.

Some animals die hard, using body armour and bodyguards. It's an evolutionary arms race between the eaters and the eaten as we count down the top ten defenders in the natural world.