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  • Lake Turkana show

    Lake Turkana

    Vágner is called in to catch a large specimen of the freshwater beast for scientists to examine.

    (02:36)
  • Examination show

    Examination

    The sample provides important evidence that the huge Nile perch of Lake Turkana might be free of parasites.

    (02:47)
  • Catch and Release show

    Catch and Release

    Jakub has another Nile perch in imminent danger. Without help the fish won’t submerge or survive.

    (03:00)
  • Thick and Deep show

    Thick and Deep

    To find one of the Amazon’s most elusive river beasts, Jakub Vágner is treking deeper into the rainforest.

    (03:06)
  • Piranhas show

    Piranhas

    While trying to catch an arapaima, Jakub soon gets fierce competition for the bait.

    (03:05)
  • White Sturgeon show

    White Sturgeon

    In British Columbia, Vágner goes head-to-head with a fish he has never faced before.

    (03:16)
  • Keep the Line Tight show

    Keep the Line Tight

    Once the white sturgeons get the bait, they can play with it for 15 minutes to half an hour.

    (03:08)
  • Black Bears show

    Black Bears

    Armed with a shotgun, Curtis delivers Jakub some alarming news.

    (03:03)
  • The Threat show

    The Threat

    Back at the camp, a new battle is brewing: the big bear is back!

    (02:52)
  • Exhausted show

    Exhausted

    Jakub is running out of steam. His only hope is that the fish is just as tired.

    (03:13)
  • Exotic Locations show

    Exotic Locations

    This expedition brings the Czech Republic native to a destination more foreign than any other.

    (02:55)
  • Alligator Gar show

    Alligator Gar

    Deep in the murky waters of Trinity River Jakub searches for a true “Texas titan”.

    (03:14)
  • Dead Titan show

    Dead Titan

    The team makes a disturbing discovery which makes Jakub sad.

    (02:50)
  • Aquarium show

    Aquarium

    Jakub gets back to Houston to get a closer look at his river adversary. A much closer look.

    (01:53)
  • Just for Fun show

    Just for Fun

    Kirk’s dad joins him and Vágner and the guys have a small fishing competition.

    (03:10)
  • New Destination show

    New Destination

    About 90 miles from the Trinity River, Lake Sam Rayburn might hold better luck for Jakub.

    (03:16)
  • Winter Storm show

    Winter Storm

    Winter Storm video from the Backyard Zoo series on Nat Geo Wild.

    (00:39)
  • Investigating the Death Worm show

    Investigating the Death Worm

    Pat heads to Mongolia to test his wrestling skills and find out more about the so-called Death Worm.

    (02:47)
  • Not-So-Arid Desert show

    Not-So-Arid Desert

    Spain investigates the Gobi Desert's environment and comes up with some surprising discoveries.

    (03:20)
  • Creature Hunt show

    Creature Hunt

    Pat finds a snake that might have been mistakenly identified as a death worm.

    (02:39)