Can an Elephant Become a Serial Killer?

When young bull elephants start killing off females, scientists realize that severe poaching not only skewed the sanctuary's gender balance, it also psychologically damaged these once gentle giants. (3:45)

Latest Videos

Preview thumbnail for video'Lioness Uses New Tactics to Take Down a Kudu
Lioness Uses New Tactics to Take Down a Kudu (3:17)
Preview thumbnail for video'Hostile Lioness Withholds Food From Hungry Orphaned Cubs
Hostile Lioness Withholds Food From Hungry Orphaned Cubs (3:09)
Preview thumbnail for video'Why Depth Charges Don't Have to Touch a Submarine to Sink It
Why Depth Charges Don't Have to Touch a Submarine to Sink It (3:52)
Preview thumbnail for video'Five Young Lion Brothers Mate With One Lioness
Five Young Lion Brothers Mate With One Lioness (3:44)
Preview thumbnail for video'How Spawning Squid Offer a Buffet for Predators
How Spawning Squid Offer a Buffet for Predators (2:58)
Preview thumbnail for video'A Clever Cuttlefish Goes in for the Kill
A Clever Cuttlefish Goes in for the Kill (1:55)
Preview thumbnail for video'The Remarkable Way Calamari Squid Catch Their Prey
The Remarkable Way Calamari Squid Catch Their Prey (1:37)
Preview thumbnail for video'A Polar Bear Released Back Into the Wild by Helicopter
A Polar Bear Released Back Into the Wild by Helicopter (2:12)
Preview thumbnail for video'This Footage of Jaguars in Panama Could Save Their Lives
This Footage of Jaguars in Panama Could Save Their Lives (3:39)