Season 4

A look at how animals can boast impressive abilities and develop unusual powers in threatening situations, and how these skills are related back to bizarre encounters between humans and animals.

Animals defy the odds, taking part in David and Goliath battles for survival, and gangs of predators ambush their prey to get the upper hand.

In the countdown of 10 craziest collisions, an aggressive aquatic predator, a deadly snake pit, and an unlikely bicycle crash test the boundaries of man's relationship with nature.

A countdown of the top 10 tales of strange things, including a hostile takeover and a deadly jacket, that you won't soon forget.

In a countdown of the top 10 shocking showdowns, hunters become the hunted, killers seek revenge in fierce battles to the death, and powerful collisions that will make you wonder how anyone got out alive.

A collection of tales featuring gentle giants riled, real-life zombie slaves, and biblical swarms out of a horror film.

Friendly animals on the attack, the deadliest annual migration in the world, and an unrelenting avian rain straight from a horror movie feature in this countdown of the 10 most outrageous animal ambushes.

A countdown of the top 10 mind-bending moments, including saviours turned savage, camouflaged ambush killers and creatures too bizarre to be true.

Explosive river invaders trespassing reptile behemoths, and tyrants fighting to end all competition. These clashers and crashers battle to the death. When an animal strays from home, anything can happen. We're counting down the top ten Deadly Duels.

A collection of incredible inter-species rescues, awesome adaptations and an urban legend-cum-reality feature in this unbelievable top 10 countdown.