Killer whales that feast on seals and hunt in small packs are thriving while their widely beloved siblings are dying out.

Gorillas are highly sociable animals – up to a point. A crowded mountain can make silverbacks more violent, scientists say.

Gray wolves rebounded in parts of the American West with remarkable speed following their reintroduction 25 years ago.

Tasmanian devils, the carnivorous marsupials whose feisty, frenzied eating habits won the animals cartoon fame, have returned to mainland Australia for the first time in some 3,000 years.

Every year, as many as 400 million people are infected with life-threatening diseases by the Aedes aegypti mosquito. It wasn’t always so dangerous.

Trees now cover most of the exclusion zone, and climate change is making them more likely to burn.

Although scientists often worry most about the loss of the world’s predators, a comprehensive new study finds that plant-eating herbivores are the animals most at risk of extinction.

Inside the U.S. and Panama’s long-running collaboration to rid an entire continent of a deadly disease.

Samoa’s population of “little dodos” is dwindling down to nothing, but the appetites of wealthy people keep putting these rare birds at risk.

China cracked down on the sale of exotic species after an outbreak of a new virus in 2002 was linked to markets selling live animals. Now another coronavirus is spreading through China, prompting calls to permanently ban the sale of wildlife.

To change the fate of the kittiwake, scientists are trying to model its world.

Already pressured by the mining and forestry industry, and other development that encroach on grazing land, Sami herding communities fear climate change could mean the end of their traditional lifestyle.