Proposition 127, backed by mostly Washington D.C.-based animal rights groups, sought to ban mountain lion hunting in Colorado ...

Mountain lions living in the busiest recreation areas were more nocturnal than their counterparts, the researchers found.

Two wild cougars on the Olympic Peninsula have been killed by bird flu, as the disease continues to spread to more species.

Snow cover in the Sierra Nevada is expected to shrink overall as the climate warms, but avalanche frequency could remain the ...

Bird flu has been reported in animals at the Wildlife World Zoo & Aquarium in Litchfield Park. Screengrab from Arizona's Family A cheetah and mountain lion are among five animals that died after a ...