A wildlife photographer recently captured images of polar bears like you've never seen them before: living in abandoned buildings in the Russian Arctic.
A new study has shown that a genetic mutation that influences the small size of dogs can be traced back to 54,000-year-old wolf DNA.
Some "highly predatory" brown bears change habitats to target more reindeer and moose calves after emerging from hibernation in Sweden, a new study finds.
Researchers have discovered a new species of branched sea worm in Japan and named it after the villainous kaiju King Ghidorah.
Divers with UNESCO have discovered and mapped out a massive and unusually pristine reef of rose-shaped corals in Tahiti.
Jonathan the tortoise has become the oldest tortoise ever by reaching 190 years old. He was already the oldest living land animal.
Scientists in Antarctica have unexpectedly spotted a sub-Antarctic penguin breeding on the southernmost continent.
A young female macaque fought her own mother to seize control of her troop for the first time in 70 years. Now her reign is in jeopardy.
A pod of orcas frees an entangled humpback whale off Western Australia. But were they really trying to rescue it?
A spellbinding new video captures a Gentoo penguin's point of view as it feasts on a giant ball of sardines alongside diving albatross and cormorants.
Scientists discovered a new type of parasitic worm that only infects the mouths of tarantula spiders.
Scientists spotted the world's deepest-dwelling squid 20,000 feet below the Philippine Sea while hunting for a lost WWII battleship.
Of all the living animals in the world, these are the ones with the longest arms, relative to body size.
A mesmerizing new video of an elusive blanket octopus swimming above the Great Barrier Reef in Queensland, Australia shows a "once-in-a-lifetime encounter."
Mesopotamians were using hybrids of domesticated donkeys and wild asses to pull their war wagons 4,500 years ago, scientists have found.