After the last confirmed eastern cougar sighting in 1938 and years on the federal endangered species list, the U.S. Fish and Wildlife Service listed the eastern cougar as officially extinct in 2018.

More than 6,300 pounds of Burmese python were tracked and removed by the team, which has removed more than 40,000 pounds of invasive snake across a 200-square-mile area since 2013.

You have an endangered subspecies of the Eastern cougar here and insert an invasive predator gobbling up their food source, I'm not sure that's going to help the situation.

You have an endangered subspecies of the Eastern cougar here and insert an invasive predator gobbling up their food source, I'm not sure that's going to help the situation.

You have an endangered subspecies of the Eastern cougar here and insert an invasive predator gobbling up their food source, I'm not sure that's going to help the situation.

You have an endangered subspecies of the Eastern cougar here and insert an invasive predator gobbling up their food source, I'm not sure that's going to help the situation.

An endangered East African crowned crane has escaped from Cougar Mountain Zoo in Issaquah, Washington, prompting an urgent bird hunt by zoo staff. The juvenile female bird was last seen around 10: ...

A critically endangered antelope species just got a little bigger thanks to the Houston Zoo. See the newest arrival and what ...

Research data suggests humans may have nearly gone extinct almost 1 million years ago, but scientists aren't sure why.

The osprey population on the Eastern Shore has dropped to just 18 birds, and scientists at William & Mary's Center for Conservation Biology say it's a sign of "early complete collapse" of the species.

The species last roamed the Earth 10,000 years ago. Biologists have confirmed the existence of a 200-million-year-old species of egg-laying mammal that has been assumed to be extinct.