This week in the final episode of the series, Steve is in the vast nature reserves of South Africa.

He goes in search of a pack of rare and endangered African wild dogs, he helps capture and tag a magnificent martial eagle. He gets hands on with a venomous spitting cobra and a puff adder as they strike and he risks life and limb to kayak up close to Africa's most dangerous mammal, the highly unpredictable hippopotamus.

This week he explores the wildlife in the stunning landscapes of Namibia. In the bush he tracks two hungry cheetahs as they hunt; he stakes out a carcass to get up close to vultures and he has a close call with an agitated lion as he helps a vet at work.

In episode four, Steve is in Australia, infamous as the ‘home of the deadly', with more lethal snakes than any other country, dangerous spiders, great white sharks and salt-water crocodiles.

In episode three, Steve travels to Mexico, where he starts his journey outside the city of Valladolid, on the vast Yucatan Peninsula, a part of Mexico that was only accessible by sea until the 1950s. It's here he's hoping to find one of the most dangerous snakes in Mexico: the rattlesnake.

This week, Steve journeys through the remote rainforests of Guyana, where he has a close call with a big black caiman, gets hands-on with the unpredictable giant bird-eating tarantula, swims alongside deadly electric eels and gets a rare sighting of the endangered giant river otter, a fearless pack hunter that can devour an entire caiman.

In episode one, Steve travels to the wild islands of Indonesia. He has a close call being chased by the world's largest lizard, the legendary komodo dragon, rescues a three metre venomous king cobra, goes diving in the treacherous seas that surround the islands getting hands on with the world's most poisonous fish and he has his first ever encounter with an unusual predator, the aptly named flamboyant cuttlefish.