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A rare fossil shows that bat flies have been parasitizing the winged mammals for at least 20 million years.

Measuring over 13 inches long, they were found in waters north of New Zealand.

A strange carcass washed ashore, sparking speculation about chupacabras and demons; scientists have a more earthy solution.

Rather than hibernating through freezing snowstorms, nature is being awakened by the weird warmth.

The Smithsonian has bred four mane wolf pups. It's their first litter in two years and they are CUTE.

More than a million green turtle eggs were laid last year on one of the Turtle Islands in the Philippines.

Sex is so dangerous for some that they actually castrate themselves during the act but it makes them stronger.

What allowed dinosaurs to get so big? A few factors were at play, including bird-like lungs, egg-laying and less need to chew.

The bills hope to shield the public from seeing undercover videos at factory farms.

It's easier to grow bigger in the sea with the water holding up your weight, say researchers.

The wide origins of domesticated horses offers insight on how our love affair with the animal has transformed humankind.

These beautiful shots of an extremely rare albino ruby-throated hummingbird were taken by two teens and two preteens.

A specialized camera allows people to see the world as reef-dwelling animals do.

The discovery gives clues to how ancient Egyptians viewed the importance of animals and their role in the afterlife.

The spiders possess a unique vision that allows them to quickly capture prey.

Two brothers claimed they found a skull that belongs to an animal that has been extinct since 1936.

The fur of golden moles has multiple layers that act as reflectors similar to the "eye shine" of nocturnal mammals.

One of the world's last pristine tropical forests is home to a bevy of new species.

The winged dinosaur Archaeopteryx had at least some jet black feathers.

The first occurrence of twins for free-ranging Tibetan macaques reveals how tough it is for primate twins to survive.

Little dinosaurs ran around here on all fours, while others were still growing in their eggs.

Humans may struggle with weight, but nature seems to know exactly how fat each animal on the planet should be.

The elusive Miller's grizzled langur popped up unexpectedly in Borneo.

Animals, like humans, use all sorts of visual trickery to attract mates.

Passengers aboard a late-night Manhattan-bound D train couldn't ignore one suspicious rider under a seat.

Snakes do not just kill on instinct, but instead monitor the condition of their victims right until the very end.

Infection may have killed the more than 50 dead New Zealand fur seals, but so far there's no certain explanation.

After being exposed to antibiotics for only 2 weeks, a drastic rise in drug-resistant E. coli has been detected in guts of pigs.

A newly found Paleozoic predator looked like a cross between a tiger and a Komodo dragon.

Increasing human carbon dioxide emissions may be impacting the brains and central nervous systems of sea fish.

Tourists on an expedition spotted the rare bird that has a mutation that dilutes its feather pigments.

Mexico's economy has made life even harder for the country's stray dogs. But there's a way you can help.

Wind speeds over the Southern Ocean have been increasing --and pushing birds in the area to faster speeds.

The Microcebus gerpi lemur was discovered in the Sahafina forest in Madagascar.

The little land frog, Paedophryne amauensis, comes in at a whopping 7.7 millimeters.

The ferocious predator had arms that were equal parts Popeye and Barbie.

Frustrated subway workers want you to take pictures of rats and rate them on their web site.

Gray seal pups that were battered by recent storms on the coast of England are being treated in a rehabilitation center.

The colorful horned snake was discovered in a remote part of Tanzania, East Africa and may be critically endangered.

A giant tortoise believed extinct for 150 years was actually just moved from its original home.