Park rangers: 70-year-old man fends off cougar attack with rock

The unidentified man told authorities that he was hiking through some trees when a cougar jumped out and knocked him to the ground.

Scientists discover 3 new sea worms that glow in the dark

The newly-discovered bioluminescent Polycirrus worms were named after creatures from Japanese folklore and an influential marine biologist.

‘New baby alert’: Endangered Francois’ leaf monkey born at San Antonio Zoo

Zookeepers at the San Antonio Zoo in Texas celebrated the recent birth of a Francois’ langur, also known as a Francois’ leaf monkey, with footage posted on April 25.

Black bear ‘destroyed’ after killing hikers’ dog, hiding body in Canada's Jasper National Park

The attack happened around 4 p.m. Saturday at the Alberta park situated in the Canadian Rockies, as two hikers and their two dogs were returning to the trailhead on Wabasso Lake Trail, Parks Canada said.

Virginia wildlife experts investigating spread of 'zombie deer disease'

Wildlife experts in Virginia are investigating the spread of "zombie deer disease," an infection that is contagious and always fatal that has been detected with increasing frequency in Virginia and other states.

Watch: Moose helps itself to popcorn and a Happy Meal at Alaska movie theater

"I do not know if a Happy Meal is good for a moose or not. However, I can confidently say that it’s not in its natural diet," a wildlife biologist quipped.

Loons are falling from the sky in Wisconsin

There have been reports of loons stranded on the ground after they fell from the sky.

Alligator found in NYC park with swallowed bathtub stopper dies, zoo says

“This was a tragic case of animal abuse," the Bronx Zoo said of the alligator, which was found suffering from severe weight loss, anemia, and other conditions.

Children's cat-killing contest in New Zealand scrapped after backlash

Organizers behind an annual hunting competition had announced a new category for kids under 14 to kill feral cats as part of an effort to protect native species, according to reports.