In the Russian Far East, scientists thought they had spotted a tiger flee shelter from the snow, possibly spooked by a much smaller female leopard sleeping inside.
Dozens of species in the reserve cannot be found anywhere else in the world.
Baboons love the calorie-heavy food found in people's homes.
Why 126 countries are trying to save the sharks.
The video was shot in November last year and has just been released after expert analysis.
Baculovirus forces its caterpillar host to climb up trees before it bursts out to infect others on the ground below.
Lions have adopted other lions, but no big cat has been seen nursing cubs of another species before this.
The animals are different to study as they live in harsh climates in politically unstable regions.
At least one expert has cast doubt on the "miracle" story of a girl who freed herself from an attacking alligator this weekend by poking its nose and pushing apart its jaws.
An analysis of lion teeth reveals why they attacked and ate dozens of railway workers 100 years ago.
Building such a wall could have far-reaching consequences for the ecological landscape of the U.S. and Mexico.
The winter cold aggravates the giant mammals' arthritis.
Some have been classified animals or flowers, but these creatures aren't so easy to pin down.
In the northern hemisphere, winter is sweeping in—let nature take your mind off the rest of 2016.
Animal rights groups have denounced the conditions that Pizza has to endure in Guangzhou.
Climate change and noise pollution could silence cod and haddock chatter.
Agriculture has made major impact on animals, birds, fish and plants in last 40 years.
The Orange County sheriff said law enforcement had recovered the body Wednesday afternoon.