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The iconic Australian animal is in danger of being wiped out due to lack of genetic diversity.

This prehistoric species had massive, powerful jaws that would have enabled it to eat anything -- even crocodiles.

After 20 minutes the shopper's hand swelled to the size of a grapefruit.

Tour some of nature’s most putrid, pungent places, nasty-to-the-nostrils nooks, and foul, fetid funky towns.

Clues suggest the arachnids can shoot silk from their feet, but some scientists argue it's not true.

A Maryland court recently declared the dogs are dangerous, but science suggests the ruling may be extreme.

As dinosaurs loomed overhead, tiny female insects had just dusted themselves with pollen grains when they perished.

Ninety percent of mammal species will lose habitat because of climate change in the coming decades.

The golden poison dart frog now has its own personal sanctuary along the Pacific coast of western Colombia.

Dads often get a bad rap in the animal kingdom, but many animal moms would probably not be given a heartfelt Mother's Day card, either.

It had been believed that kangaroos produced little or no methane gas.

A look at how "Santino," a male chimpanzee at a zoo, appears to enjoy his surprise attacks on humans.

"Santino," a male chimpanzee at a Swedish zoo, appears to enjoy his surprise attacks on humans.

The discovery adds Florida to the list of places in North America where humans coexisted with massive, now extinct, creatures.

The smallest dwarf mammoth stood just under 4 feet and lived on the Greek island of Crete.

The extraordinary camera trap footage of the Cross River gorilla conveys the animal's struggle -- and pride.

They were bigger than today's crocs -- big enough to swallow a human.

The greenhouse gas methane produced by all sauropods across the globe would have been about 520 million tons per year.

A shark expert suggests that lake monsters in Alaska and Scotland may actually be sharks.

The bigger the eyes, the faster the animal.

Did the lion really mistake the baby for a zebra?

The discovery of a very large, very mysterious fossil by an amateur paleontologist has left researchers baffled.

Marine animal populations thrive when presented with dense and accessible patches of prey, as opposed to just more of it.

A musically inclined elephant not only plays a harmonica, but composes her own tunes.

Bottlenose dolphins in Brazil have taught themselves to work as a team with fishermen, creating a win-win for both the marine mammals and humans.

This Week in Discovery News we peek into a future where sex robots run the prostitution industry. Plus, we debunk pet psychics and recap stories of a fireball that exploded over central California.

The city of Detroit has a serious stray dog problem and a rapper is on a mission to help the dogs and his city.

Some dinosaurs were already in decline before the big asteroid struck.

A great blue heron family's exploits are drawing great big attention thanks to a live video feed.

Australia has listed the koala as a threatened species in parts of the country for the first time.

Marine experts plan to herd a disoriented dolphin out of a narrow wetlands channel.

Hard-to-find mammals can be detected by their blood inside leeches.

A microscopic algae-eater that lives in a lake in Norway may be one of the world's oldest organisms.

Rats have evolved to gnaw with their front teeth and chew with their back teeth better than any other rodent.

New research suggests the pygmy shark is the missing link in the evolution of luminescence in sharks.

The birds have what amounts to an internal compass in their brain.

The endangered Amur leopards have been photographed for the first time by camera traps.

The biggest problem has to do with the land surrounding airports.

The United States scrambled on Wednesday to contain the fallout from the discovery of mad cow disease in California.

A seven-foot-long fossilized specimen was found in the Ohio city from when shallow seas covered the region.