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Ancient mummified cheetahs discovered in Saudi Arabia contain preserved DNA from the long-lost populationCheetahs vanished from Saudi Arabia half a century ago. Now long-dead mummified big cats may help herald their return.
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Woolly rhino flesh pulled from ancient wolf stomach gives clues to ice age giant's extinctionMore than 14,000 years ago, a wolf pup ate a piece of woolly rhino. Scientists have analyzed the rhino's DNA to figure out why it went extinct.
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Did any cat breeds develop naturally?Humans have undoubtedly bred cats to create certain breeds, but did any of these feline breeds emerge naturally?
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Why can't you wiggle your toes one at a time?A biological anthropologist explains why humans can't wiggle their toes in the same way they can wiggle their fingers.
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Did reintroducing Wolves to Yellowstone really cause an ecological cascade?Previous research on the effect of wolves on the food web has been criticized, raising questions about the predator’s role in the Yellowstone ecosystem.
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Primates Quiz: Go ape and test your knowledge on our closest relativesTime to stop monkeying around — just don't go bananas if you get the wrong answer!
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Science history: Dian Fossey found murdered, after decades protecting gorillas that she loved — Dec. 27, 1985Dian Fossey was a zoologist who spent decades studying the elusive mountain gorillas of Congo and Rwanda before she was murdered.
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Cats meow more at men to get their attention, study suggestsA small study reveals that cats greet male owners more vocally than female ones. But the findings could be a result of cultural norms among the participants, rather than a universal cat behavior, scientists say.
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Pumas in Patagonia started feasting on penguins — but now they're behaving strangely, a new study findsPumas in Patagonia, Argentina are eating penguins in a national park — and it's changing how the big cats are interacting with each other.
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