The last surviving male died in March this year.
OR-7 has inspired activists worldwide. His 17 pups have moved across Southern Oregon and Northern California. Unwittingly, he has done more for his species than any other wolf.
The Chinese giant salamander is capable of growing up to 5.9 feet in length.
A new Republican piece of legislation will threaten about 58.5 million acres, or 91,000 square miles, of protected forest land according to environmental rights activists.
Large predators hunting in habitats where humans pushed them out are no longer anomalous, according to scientists.
Cataloguing the genetic data of 1.5 million known species will take 10 years, cost approximately $4.7 billion and require the cooperation of scientists, governments and students from around the world.
Is Tony the Tiger helping or hurting real tigers?
The dolphin is still in critical condition.
"Esmond was one of conservation's great unsung heroes," Save The Elephants founder Iain Douglas-Hamilton said.
Amur tigers have the personal backing of Vladimir Putin.
If their status changes, protections for the leatherbacks could be reduced.
One account said this was the worst animal welfare violation she'd ever seen.
Breeding endangered animals is part of a zoo's "species surival plan."
Despite legal protection, North Atlantic right whales keep getting struck accidentally by fishing boats and entangled in gear.
In the Russian Far East, scientists thought they had spotted a tiger flee shelter from the snow, possibly spooked by a much smaller female leopard sleeping inside.
The scientists hope they weren't interrupting a courtship session.
The exact cause is still a mystery, though a prime suspect has been named.
eBay has hundreds of listings for taxidermy bats, and Etsy has nearly a thousand.
This giant rat is gold-colored, a foot and a half long, and was just a rumor among scientists for decades.
Sea turtle populations seem to be on the rebound after decades of work.