A new study in the Swiss Alps has found that marmots are living higher up the mountains than they did four decades ago. However, they've hit a ceiling that could leave them with nowhere else to go. As ...

Pine martens have returned to a wild lands area of south-west England after an absence of more than a century. Fifteen of the tree-climbing mammals – eight adult females and seven adult males – have ...

PORTLAND, Maine — Whales, dolphins and seals living in U.S. waters face major threats from warming ocean temperatures, rising sea levels and decreasing sea ice volumes associated with climate change, ...

Wildlife biologists recently released 19 pine martens into Exmoor National Park, where they've been locally extinct for more ...

A bear cools off in a stream in Yellowstone National Park. A UC Davis study found that North American mammals in hotter regions increasingly seek out forested areas away from human-dominated ...

On both page and screen, we're used to seeing dinosaurs and prehistoric birds as vibrant creatures exhibiting unique and ...

A study that observed five species of mammals in northeast São Paulo state reveals that most animals change their routines to escape contact with humans, usually by adopting nocturnal habits. For the ...

Spotting a hoary marmot is a rite of passage for serious Pacific Northwest hikers. The charming and curious creatures can be found in the subalpine meadows of Washington’s North Cascades range, ...

Population bottlenecks caused by stark population loss due to illness or habitat destruction caused mammals' disease immunity ...

North America's formidable rattlesnakes face numerous predators, including venom-resistant kingsnakes and Eastern indigo ...

It's been a doozy of a year for marine mammals, who have been dying in record numbers along the California coast. Volunteer ...