It’s Fat Bear Week at the Brooks River in Alaska.
Who will be the chonkiest bear of all? As bears in Alaska's Katmai National Park bulk up for winter, rangers invite the public to select one thicc beauty as the favored fattest.
A seven-armed octopus unexpectedly washed ashore on Whidbey Island, Washington, even though these cephalopods aren't native to the area.
These deep-diving whales can stay submerged for more than an hour longer than once thought, and recover surprisingly quickly.
Scientists have discovered the oldest known sperm, dating back 100 million years, crammed in the body of a tiny crustacean.
One of London's Wildlife Photographer of the Year honorees shows an endangered crocodile carrying 100 babies on his back
Stingrays are an instantly recognizable fish. The graceful swimmers glide through the water by undulating the edges of their flat, pancake-like bodies.