Otter attacks women tubing on Montana river; one airlifted to hospital
One woman's wounds were so severe that she had to be airlifted to a hospital, authorities said.
Watch: Eagle swoops down and catches fish midair, wowing onlookers
A bald eagle put on an impressive show for a man and his friends when it swooped down and caught a fish high in the air.
'King Otis' fans rejoice: Famed brown bear returns to Alaska live cam
"King Otis" is a live cam star and four-time Fat Bear Week champion.
Video: Florida scuba diver frees trapped nurse shark from fishing line caught in artificial reef
A Florida diver came face-to-face with an entangled nurse shark as he worked to free the animal from the coral blue waters of Destin.
Beached whales euthanized in Australia after frantic rescue efforts fail
Officials said the whales were euthanized "to avoid prolonging their suffering."
Watch: Volunteers try desperately to save nearly 100 beached whales in Australia
Drone footage showed the whales clustering and forming into a heart shape before stranding themselves on the beach.
Woman dies after grizzly bear encounter near Yellowstone National Park
A woman was found dead in Montana on Saturday after coming into contact with a grizzly bear on a trail west of Yellowstone National Park.
See the rare blue frog spotted in Rhode Island
Some of Rhode Island's frog species can occasionally exhibit rare blue coloration.
Drug-addicted 'cocaine sharks' may be devouring dumped drugs off Florida coast
Thousands of sharks off Florida's coast may have ingested bales of cocaine left in the water by drug smugglers attempting to get their product into the United States.
Fierce black bear 'UFC match' caught on camera in Florida homeowner's yard: 'Never seen that before'
Two black bears had an intense clash in a Florida homeowner's yard – and it was all caught on his home surveillance camera.
Suspected lioness on the loose near Berlin: police
Nearby residents were advised to stay indoors if possible, to refrain from walks and jogs in the woods, and to take dogs at most for short walks on a leash.
Dolphin and her baby rescued after being trapped in pond for 2 years
Video shows a group of rescuers gently capture the dolphins and bring them safely back to the open waters where they belong.
Maine woman, 64, punches bear in nose after it chased her dog
The woman was bitten when she stepped in between her dog and the black bear, which had been chasing her pet – and punched the bear in the nose.
Rare lizard found only in major US oil patch proposed as endangered species
The dunes sagebrush lizard has quite the natural habitat. It's found only in parts of one of the world's most lucrative oil and natural gas basins.
Ticks use static electricity to latch on to you from afar, researchers find
Ticks can't jump or fly onto their hosts, but static electricity gives them a boost, researchers have found.
Marvel at never-before-seen octopus nursery found off coast of Costa Rica
An international team of scientists recently explored previously unseen seamounts off of Costa Rica. What they found on their expedition was a new active octopus nursery and witnessed babies hatching.
Video: playful orcas spotted off California coast
A group of orcas were seen playing near the surface for hours off the coast of California, according to a whale-watching group.
Tourist films something massive swimming below plane: It was a world-famous creature
A tourist flying over the Great Barrier Reef unknowingly captured the video of a lifetime.
Watch: Dingo bites sunbathing tourist on Australian beach
Wild video shows the moment a dingo moved in on a group of beachgoers and bit a French tourist's backside.
Black bear seen walking across tennis court near Florida resort
This bear sighting came just one day after a second black bear was seen frolicking in the ocean alongside beachgoers.