Chimpanzees are one of our closest living relatives and share many of the same traits as humans. They are highly intelligent and social creatures, but they are also capable of extreme violence.
Wally has been stirring up mischief by lounging on lifeboat slipways and capsizing passing dinghies, but conservation groups have warned tourists not to get too close.
Baby sea stars may look innocent and adorable, but they're teensy little cannibals and eat their own siblings for their own survival.
At least 90 mysterious blobs of underwater jelly have been sighted near Norway and the Mediterranean Sea, and researchers finally know what they are.
A mysterious disease affecting young Californian black bears is causing them to become fearless when interacting with humans and is preventing them from developing properly.
An arachnologist described a new species of peacock spider after a citizen scientist discovered it in the wetlands of southern Australia.
Scientists propose that the circling could calibrate the animals' magnetic biosensors, in much the same way as submarines circle.
High-speed cameras and arrays of microphones helped researchers draw an acoustic map of hummingbirds' distinctive hum.
A well-preserved fossil reveals that 180 million years ago, an eight-armed predator suffocated with its prey.
Most predators are stymied by the cicadas' 17-year life spans, but the insects are still vulnerable to being zombified.
Scientists have finally solved a 25-year-old mystery surrounding a neurodegenerative disease killing bald eagles and other lake animals in the U.S.
Every few years, millions of by-the-wind sailor jellyfish wash up on beaches and die. What is causing so many of them to become stranded? The blob could be to blame.