Wildlife Conservation Society

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Khulan Return

After a 65-year absence, they are back in Eastern Mongolia thanks to the creation of safe crossing points along the Trans-Mongolian Railway.

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Your Impact

We helped establish two strategic conservation corridors in Ecuador that benefit wildlife. Check it out in our new spring impact report.

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National Mammal

As we mark the 10th anniversary of the American bison as the U.S.’s National Mammal, we’re revisiting our podcast episode on how extraordinary partnerships across geography, culture, and politics helped make it happen.

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WCS Impact Report

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In the news

May 21, 2026 | Terrestrials

Big Cats

Did you know: cheetahs aren’t technically “big cats” and orange tiger fur looks green to deer. WCS's Luke Hunter talks big cats on the podcast.

April 28, 2026 | Policy Options

On Environmental Crime

Canada should support a proposed UN agreement to strengthen international cooperation on environmental crime, argues an op-ed co-authored by WCS Canada's Justina Ray.

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