Long-tailed pangolin (Phataginus tetradactyla), Mangamba, Littoral Province, Cameroon

The Pangolin Extinction Vortex

This shy, strange-looking, nocturnal mammal has been poached nearly to extinction.
Narwhals

The Enduring Mysteries of the Narwhal’s Tusk

Why don't we know what narwhals' tusks are for? New footage suggests they use the tusks to stun fish before eating then, but some mysteries remain.

Venom Found in the Unlikeliest of Animals

Venom is used by some surprising animals, including mammals.

Keeping Up with the Carnivores

Biological research tracks predatory carnivores, who are increasingly veering into North American cities.