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Is Your Salmon Small Because of Hungry Cavemen?

Stone Age fishermen in northern Spain selected the biggest whoppers, leaving us with a smaller catch, a new study claims.

Puppy-Size Tarantula Found: Explaining World’s Biggest Spider

The world’s largest spider has crept back into the spotlight, thanks to a scientist who described harrowing arachnid encounters on his blog.

Why a Swordfish’s Sword Doesn’t Break

A swordfish’s “sword” is its most prominent feature, but scientists have only now discovered the unusual properties that keep the sword strong and ready to slash.

Why Did Thousands of Venomous Spiders Swarm a House?

Thousands of brown recluse spiders that forced a family from their home may have been mostly males looking for mates, scientist says.

Weird Animal Question of the Week: A Fungus That Looks Like Strawberries and Cream

This Weird Animal Question of the Week focuses on the odd world of fungi, which can resemble wiffleballs, bird’s nests, and strawberries and cream.

Watch: Kickboxing Kangaroos and 4 of Nature’s Most Impressive Fighters

After video of kickboxing kangaroos went viral last week, we take a closer look at more of nature’s impressive fighters.

Watch Raccoons Escape Trash Can—Are Urban Animals Getting Smarter?

A new video suggests that these “perfect little urban warriors” may be smarter than their rural kin, a scientist says.

Fish Changes Color in a Flash, Scientists Discover

Octopuses, squid, and chameleons can do it. And now, it turns out that a fish can do it too. The rockpool goby is the latest animal discovered to have the ability to change their color and the brightness of their skin to blend in with their background.

Mystery Solved? How Birds Weather Turbulence

When turbulence hits, flying birds can’t fasten their seatbelts—so at least one species of eagle tucks its wings to stabilize flight, a new study says.

New TV “Channels” to Broadcast Live Stream of Otters, Meerkats

So-called whitespace technology will allow us to watch wild animals in real time in some of the remotest parts of the world, according to researchers.

Ask Your Weird Animal Questions: What’s a Pink Fairy Armadillo?

This week in Ask Your Weird Animal Questions, we get to the bottom of pink fairy armadillos and whether or not you should get an alpaca for a pet.

Snake Robots Crack Mystery of How Reptiles Climb Dunes

High-speed video and customized “snakebots” have revealed that a desert snake uses a highly unique slither to climb sandy hills, a new study says.

Watch Nat Geo’s Roundup of Best Octopus Videos

What better way to mark International Octopus Day than with a roundup of some of our favorite octopus videos. Watch as they battle it out with other sea creatures.

Ancient “Oddball” Mammal Reshuffles Family Tree?

A mysterious mammal that waded through South Asian swamps 48 million years ago is a distant cousin of modern rhinoceroses and tapirs, a new study says.

Bear Cub Mystery in NYC: Explaining Recent Black Bear News

A mysterious black bear cub found dead in New York City’s Central Park this week could not have gotten there on its own, expert says.