BBC Earth

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Steve takes a look at the incredible world of reptiles and discovers what makes them cold-blooded killers.

First up he looks at their weapons. From the chameleon's spring-loaded turbo tongue to the alligator snapping turtle's lethal jaws. Next Steve tests out the most powerful bites on the planet when he encounters reptilian giants – the crocodiles. Finally Steve investigates the super senses of snakes before heading to the remote island of Komodo to meet the largest lizard alive.

Next on...

Series 1, Episode 9

BBC Earth

Steve joins forces with Texan fisherman Bubba as he hunts for a river monster than can grow up to 10 feet long. 9/31

Series 1, Episode 8

BBC Earth

Steve dives with a mako, the fastest shark in the seas, on California's Pacific coast in a fun-filled, adrenaline-fuelled ocean adventure. 8/31

Series 1, Episode 10

BBC Earth

Steve journeys to the tropical Bahamas where he explores a complex flooded cave system. The biggest risk is getting lost and running out of air. 10/31

Series 1, Episode 9

BBC Earth

Steve joins forces with Texan fisherman Bubba as he hunts for a river monster than can grow up to 10 feet long. 9/31

Series 1, Episode 8

BBC Earth

Steve dives with a mako, the fastest shark in the seas, on California's Pacific coast in a fun-filled, adrenaline-fuelled ocean adventure. 8/31

Series 1, Episode 9

BBC Earth

Steve joins forces with Texan fisherman Bubba as he hunts for a river monster than can grow up to 10 feet long. 9/31

Series 1, Episode 11

BBC Earth

Steve and his crew head to Hawaii, where they witness male humpback whales duelling it out to see who can get the girl. 11/31

Series 1, Episode 10

BBC Earth

Steve journeys to the tropical Bahamas where he explores a complex flooded cave system. The biggest risk is getting lost and running out of air. 10/31

Series 1, Episode 11

BBC Earth

Steve and his crew head to Hawaii, where they witness male humpback whales duelling it out to see who can get the girl. 11/31

Series 1, Episode 10

BBC Earth

Steve journeys to the tropical Bahamas where he explores a complex flooded cave system. The biggest risk is getting lost and running out of air. 10/31

Series 1, Episode 11

BBC Earth

Steve and his crew head to Hawaii, where they witness male humpback whales duelling it out to see who can get the girl. 11/31

Series 1, Episode 10

BBC Earth

Steve journeys to the tropical Bahamas where he explores a complex flooded cave system. The biggest risk is getting lost and running out of air. 10/31

Series 1, Episode 12

BBC Earth

Steve eventually comes face to face with a white tip shark after days of searching the open waters in Hawaii. 12/31

Series 1, Episode 13

BBC Earth

Harness and ropes in hand, Steve lowers himself into the depths of one of the most inhospitable environments on earth in Texas to hang out with a swarm of Mexican free-tailed bats.…

Series 1, Episode 12

BBC Earth

Steve eventually comes face to face with a white tip shark after days of searching the open waters in Hawaii. 12/31

Series 1, Episode 12

BBC Earth

Steve eventually comes face to face with a white tip shark after days of searching the open waters in Hawaii. 12/31

Series 1, Episode 13

BBC Earth

Harness and ropes in hand, Steve lowers himself into the depths of one of the most inhospitable environments on earth in Texas to hang out with a swarm of Mexican free-tailed bats.…

Series 1, Episode 13

BBC Earth

Harness and ropes in hand, Steve lowers himself into the depths of one of the most inhospitable environments on earth in Texas to hang out with a swarm of Mexican free-tailed bats.…

Series 1, Episode 13

BBC Earth

Harness and ropes in hand, Steve lowers himself into the depths of one of the most inhospitable environments on earth in Texas to hang out with a swarm of Mexican free-tailed bats.…

Series 1, Episode 14

BBC Earth

Steve visits Trinidad, a Caribbean island packed with deadly critters. The team camp out in the dangerous forest to track a rare and stunningly beautiful jungle cat; the ocelot. 14/31

Series 1, Episode 13

BBC Earth

Harness and ropes in hand, Steve lowers himself into the depths of one of the most inhospitable environments on earth in Texas to hang out with a swarm of Mexican free-tailed bats.…

Series 1, Episode 13

BBC Earth

Harness and ropes in hand, Steve lowers himself into the depths of one of the most inhospitable environments on earth in Texas to hang out with a swarm of Mexican free-tailed bats.…

Series 1, Episode 14

BBC Earth

Steve visits Trinidad, a Caribbean island packed with deadly critters. The team camp out in the dangerous forest to track a rare and stunningly beautiful jungle cat; the ocelot. 14/31

Series 1, Episode 14

BBC Earth

Steve visits Trinidad, a Caribbean island packed with deadly critters. The team camp out in the dangerous forest to track a rare and stunningly beautiful jungle cat; the ocelot. 14/31

Series 1, Episode 14

BBC Earth

Steve visits Trinidad, a Caribbean island packed with deadly critters. The team camp out in the dangerous forest to track a rare and stunningly beautiful jungle cat; the ocelot. 14/31

Series 1, Episode 15

BBC Earth

Steve travels to Guadalupe Island, where he dives into the crystal clear waters and swims with the fearsome great white shark and their prey - Guadalupe fur seals. 15/31

Series 1, Episode 15

BBC Earth

Steve travels to Guadalupe Island, where he dives into the crystal clear waters and swims with the fearsome great white shark and their prey - Guadalupe fur seals. 15/31

Series 1, Episode 14

BBC Earth

Steve visits Trinidad, a Caribbean island packed with deadly critters. The team camp out in the dangerous forest to track a rare and stunningly beautiful jungle cat; the ocelot. 14/31

Series 1, Episode 15

BBC Earth

Steve travels to Guadalupe Island, where he dives into the crystal clear waters and swims with the fearsome great white shark and their prey - Guadalupe fur seals. 15/31

Series 1, Episode 15

BBC Earth

Steve travels to Guadalupe Island, where he dives into the crystal clear waters and swims with the fearsome great white shark and their prey - Guadalupe fur seals. 15/31