New frog species is armed with special skin-puncturing claw. The "extraordinary" Ecuadorian amphibian may use the special body part to flay and stab predators—and even fellow frogs.

Scientists have discovered that the kultarr – one of Australia’s most elusive marsupials – is actually three different ...

See the best animal photos of 2018. Get up close to a shark feeding frenzy and meat-eating bats in these amazing pictures selected by National Geographic editors.