Butterflies can evolve new colors rapidly and simply by tweaking the structures of their wings, a new study says.
The large mammals have 2,000 genes related to smell, the most ever discovered in an animal, a new study says.
Take a look inside the Oden, the 351-foot (107-meter) Swedish vessel that pulverizes ice and helps polar scientists do their jobs.
Three new species of katydid found in South American rain forests produce the animal kingdom’s highest pitched mating call, according to a new study.
A tiny arachnid found in southern California is the world’s fastest land animal relative to size, according to a new study.
The zebra’s stripes evolved to keep pesky insects at bay, according to the most thorough study to date on the subject.
Hamsters weren’t always spinning on the wheel: There are 26 species of wild hamster, including the Syrian, which was first found near the city of Aleppo.
The ivory trade is an “ecological and moral disaster” that requires businesses and consumers to take up the fight, Hillary Rodham Clinton and Chelsea Clinton argued in a joint op-ed published February 23 in the Financial Times.
An egg-laying, spiny mammal with a four-headed penis is already pretty bizarre, but it turns out short-beaked echidnas are even stranger than we thought.
A hot-pink slug, a Pinocchio lizard, and a troll-haired bug are among our editor’s picks for 2013′s weirdest animal discoveries.
Tiny mammals split off from other species three million years ago, study says.
Meet the giant forest hog, which at 600 pounds (275 kilograms) brings home the record-setting bacon as the world’s biggest pig.
People in Mississippi have spotted a “chupacabra”—get the facts behind these mythical monsters.
Cute new pictures of baby olinguitos—a new mammal recently discovered in South America—have emerged.