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Mary Bates is a freelance science writer living in Boston. She has a PhD in psychology from Brown University where she studied bat echolocation. You can visit her website at www.marybateswriter.com and follow her on Twitter at @mebwriter.

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.

Photo: Mite Attacking Ant Entombed in Amber, Oldest Fossil of Its Kind

An ancient ant with a mite attached to its head is the oldest such fossil ever found, a new study says.

Watch: Sneaky Octopus Dismantles Camera

Such behavior isn’t out of the ordinary for octopi, among the most clever—and mischievous—of the invertebrates, expert says.

The Shocking Truth About Electric Animals

Electricity is a way of life for many animals, turning hornets into little generators and the enlarged chins on fish into navigation tools.

Amazing Animals That Walk on Water

A surprising study reveals ants can walk on water—find out what other animals can also accomplish this incredible feat.

How Catfish Stalk Prey in the Dark

Catfish searching for prey in the dark detect slight chemical changes in the water produced by the breath of a sea worm, a new study says.

19 New Species of Speedy Praying Mantises Found

Scientists have found 19 new species of mantises that roam Central and South America—and named one of them after Al Gore, a new study says.

Your Shot Pictures: More Albino and Oddly White Animals

See an albino bat, wallaby, deer, and more in our roundup of photos submitted by National Geographic readers.

Weird Purple Frog Seduces Females From Underground

Males calls to females from beneath a thin layer of soil—the only frog known to have such an odd behavior, a new study says.

Beware in the Bayou: Alligators and Crocodiles Can Climb

You might think of crocodiles lurking in the water or perhaps sunning themselves on a riverbank, but it turns out these toothy reptiles’ domain extends to the upper branches of trees.

Extinct “Devil Frog” Sported Spikes, Body Armor

Sporting elaborate spikes and body armor, the extinct amphibian was even more terrifying than previously thought, a new study says.

Pictures: Special Albinos and Unusually White Animals

From elephants to squirrels, unusually white animals often hold a special place in society.

5 Animals That Are Awesome Architects

From dams to nests to body armor, these feats of animal ingenuity will blow your mind—and perhaps inspire you to get up off that couch.

Chemical Camo Helps Frog Pass as Ant—And Avoid Being Stung

The disguise secreted by the skin also keeps the West African savanna frog moist, researchers say.

3-Foot-Long Earthworms Get a Boost in Australia

The dwindling giant Gippsland earthworm is getting a new lease on life as part of an innovative farming program in Australia.