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Greenland sharks: Toxic, half-blind giants of the oceanGreenland sharks may have a lifespan of hundreds of years in the Arctic and North Atlantic oceans, where much about their lives remains a mystery.
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Are humans at the top of the food chain?Lions, wolves and great white sharks have no natural predators, except humans. Does that mean humans are at the top of the food chain?
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Bees 'shriek' when attacked by giant cousins of 'murder hornets'Asian honey bees rally against giant hornet invasions with an acoustic response that resembles the alarm shrieks of birds, primates and other social mammals.
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Human skull fragments found in massive boneyard in hyenas' lava tube caveIn the Umm Jirsan lava tube, the longest such structure in Saudi Arabia, scientists discovered piles bones belonging to animals that hyenas devoured there for thousands of years.
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Koala-hunting eagle terrorized Australia 25 million years agoA newly-identified eagle fossil is the oldest ever found in Australia.
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What were the largest predators in North America?Here are the largest predators ever to have lived in North America.
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Humans are practically defenseless. Why don't wild animals attack us more?Humans are slow and weak compared with bears, pumas and other large predators, but these beasts usually avoid us. Why don't these animals try to eat us more often?
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Ancient hippo-size reptile was a quick and ferocious killing machineMillions of years before dinosaurs appeared, the hefty reptile Anteosaurus was a deadly predator. Scientists just learned that it was also unexpectedly speedy.
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Snakes insert their heads into living frogs' bodies to swallow their organs (because nature is horrifying)In two new studies, researchers identified more snakes that disembowel frogs to eat their organs, a gruesome habit that was only recently discovered.
