Season 1

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  6.3/108 votes

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  Survival Of The Fittest

  Season 1 Episode 1 - Aired 3/25/2016

  There are many fine examples of evolutionary history in the natural world. Whales evolved from land-dwelling creatures to today's marine mammals.

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  5.9/1011 votes

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  The Big Cats

  Season 1 Episode 2 - Aired 4/1/2016

  The leopard is perhaps the best-equipped big cat, with a population spread far and wide, but lions have almost no predators.

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  6.0/108 votes

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  The Great Desert Race

  Season 1 Episode 3 - Aired 4/1/2016

  Desert animals have evolved to handle heat and lack of water. This includes scorpions, which have existed since life first crawled from the sea.

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  6.0/108 votes

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  Herbivores

  Season 1 Episode 4 - Aired 4/1/2016

  The African Savannah sees thousands of battles each day. How do elephants survive on a diet that even the strictest vegetarian would avoid?

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  7.0/107 votes

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  Natural Warriors

  Season 1 Episode 5 - Aired 4/8/2016

  Males and females of some species fight viciously. Though they are usually not trying to kill each other, the fighting can result in death.

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  6.6/107 votes

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  Run Like The Wind

  Season 1 Episode 6 - Aired 4/8/2016

  With predators always looking for a meal, their prey must constantly avoid being eaten. Defensive adaptations add to their chances of survival.

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  6.1/109 votes

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  The Early Bird

  Season 1 Episode 7 - Aired 4/8/2016

  Attack and escape scenarios involving avian predators and their prey, including horizontal speeding and diving to avoid capture.

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  6.5/108 votes

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  Reptiles

  Season 1 Episode 8 - Aired 4/15/2016

  Crocodiles are descended from animals that roamed Earth 250 million years ago, while snakes rely on the sun to control their temperature.

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  6.8/108 votes

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  Defenses

  Season 1 Episode 9 - Aired 4/15/2016

  From insects that look like leaves and snakes that play dead to flying fish and poisonous toads, animals defend themselves in fascinating ways.

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  NaN/100 votes

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  Underwater Predators

  Season 1 Episode 10 - Aired 4/15/2016

  Almost all animals living in the sea have bodies designed for hunting or protection, and predators have adapted extreme measures to survive.

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  NaN/100 votes

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  Underwater Defences

  Season 1 Episode 11 - Aired 4/22/2016

  Protecting themselves underwater is a matter of invention and reinvention, so aquatic animals deploy an array of strategies just to stay alive.

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  NaN/100 votes

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  Underwater Prey's Defenses

  Season 1 Episode 12 - Aired 4/22/2016

  Protecting themselves underwater is a matter of invention and reinvention, so aquatic animals deploy an array of strategies just to stay alive.

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  6.1/109 votes

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  The Race Underfoot

  Season 1 Episode 13 - Aired 4/22/2016

  There are many reasons why insects survive, from strong, flexible shells to wings that give them the option of flying away from danger.

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  NaN/100 votes

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  After Dark

  Season 1 Episode 14 - Aired 4/29/2016

  Nocturnal animals use the dark to escape predators, avoid the heat of the day, and take turns sharing food and resources.

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