Megafauna like massive elephants were once thought to have gone extinct due to humans arriving, but it turns out we weren't responsible after all.
Frogs across the world are being infected by a skin-infecting fungus that is responsible for driving many species into being endangered or even extinct.
The last known Tasmanian tiger—the iconic Australian mammal that was the largest living carnivorous marsupial—died in 1936.
The expensive effort to bring the dodo back from the dead could have positive impacts in ecology and research, but could also negatively affect other animals.
Bones believed to be of the antique bison, an extinct species of bison larger than modern day bison that died out around 10,000 years ago, have been discovered.
"Part of its root was sticking up a bit and I pulled it up," a diver said. "Later on the boat, I realized it was bite marks."
Having dropped to a population of a mere two wolves in 2018, there are now 28 individuals on Isle Royale thanks to restoration efforts.
Evolutionary adaptations have excited researchers that have discovered a connection between mammals today and predators from about 300 million years ago.
"I had to take care of the rare filmed footage and pay tribute to the last representative of a species, which disappeared 85 years ago," said Samuel François-Steininger.
Tasmanian tigers are among the largest carnivorous marsupials known to science.
Megalodon could grow up to 18 meters in length and weigh as much as 37 tons.
Not all animals take the time to parent their young, especially if they have hundreds per clutch of eggs. But it looks like this invertebrate did.
Surveying four small Russian islands near the shores of Alaska, scientists spotted a grizzly "fence" of bones on the beach that turned up a rare discovery.
Several extinct members of the giraffe family found in Madrid are shockingly weird-looking.
Despite the odds, scientists have found one of the world's oldest preen glands in a 48-million-year-old bird fossil.
DNA evidence confirms it: The "tree lobster" that was declared extinct a century ago is actually holding on.