Cameramen chase down the monarchs flying around a field.
(01:00)Migration Ecologist tests the first test ever of an electronic tag on a monarch butterfly.
(02:57)Red crab larvae hatch and head for dry land, covering Christmas Island's shores in delicate little crablings.
(02:22)Crab males endure a harrowing journey towards sea -- facing yellow crazy ants and traffic along the way.
(02:33)Producer talks about filming crabs while on locations.
(02:17)Mother bats prepare for migration, giving their young as much milk as they can and oiling up their wings.
(02:55)Cameraman Rick Rosenthal talks about just how complicated it was to find male sperm whales.
(01:53)While searching for elephants, cameraman Bob Poole and his crew are encased in a massive dust storm.
(03:01)Using Science to save Elephants by preventing them getting too close to "human territory".
(02:56)Watch the Packs & Swarms video, part of World's Deadliest on Nat Geo WILD.
(00:35)A tremendous mouse infestation invades the Australian farming community. But what could be causing the plague-like conditions?
(02:51)Colobus monkeys perform aerial acrobatics to escape attack from Gombe chimps.
(02:22)A gray wolf pack dominates in its territory.
(02:29)Break In Bear video from the Swamp Men series on National Geographic Channel.
(00:35)Panther Down video from the Swamp Men series on National Geographic Channel.
(00:34)The Swamp Men newbies need to prove they have what it takes to survive 'Safari'.
(01:06)See the Swamp Men go on high alert after a nine-foot croc escapes!
(00:39)Things heat up at the Billie Swamp Safari...
(00:59)There's a major security breach and the Swamp Men need to restore some order.
(00:16)The animals at the safari are getting restless!
(00:20)