Mammals

Experts worry this booming trade could doom the big cats in the wild.

Desperate times call for desperate measures, and maybe even a few crazy ideas.

Biologist Carter Niemeyer says gray wolves can only survive if we embrace wild spaces and scientific truth, not hatred and fear.

The fungus that causes white-nose syndrome continues its deadly spread west — but a meeting of bat researchers reveals cause for hope.

Eco-books coming out this month also look at the Flint water crisis, the effects of sea-level rise and the history of radical environmentalism.

It took a decade of hard work, but one of the world’s most important wildlife corridors is now emerging from the fragmented forests of coastal Brazil.

Chemicals collect in microplastics, which then get eaten by fish, birds and seals — and by humans.

As the wild population of red wolves falls to just 40 animals, captive breeding may be their last chance for survival.

The U.S. Department of Agriculture killed more than 23,000 beavers last year. There’s a better way to manage our ecosystem engineers.

Thanks to protective efforts in Russia, these critically endangered big cats have renewed hope of avoiding extinction.