Mammals

Starving Sea Lions Are Piling Up on California Beaches

It's the third year of a crisis that's confusing scientists

The western tarsier, a rare primate species, has lost large amounts of its Borneo habitat to logging. More of that habitat is likely to disappear because of climate change.

Borneo's Mammals Face a Deadly Mix of Logging and Climate Change

But adding small amounts of land to already protected areas could help save the island's biodiversity

Pacific bluefin tuna populations have declined by up to 33 percent over the last 20 years.

300+ Species Just Joined the List of Threatened Plants And Animals

Overfishing, overhunting and habitat loss drove many of the new additions

Chacma baboons (Papio ursinus) fight. Infanticide in baboons is driven by a mating structure built on male competition.

Why Some Mammals Kill Babies of Their Own Kind

Male mammals that commit infanticide developed the behavior in response to their species' mating style

The skeleton was discovered near the American Falls dam and reservoir in Idaho.

What Appears to Be a Complete Mammoth Skeleton Was Discovered in an Idaho Ditch

A nearby reservoir has just covered the fossil in water, however, postponing the excavation

Matt Dean (left) and Jim Dines (right) analyzed pelvic bones of whales and dolphins from 29 different species.

Promiscuous Whales Make Good Use of Their Pelvises

Hips don’t lie: Whale pelvic bones are not vestigial but instead evolved to help the marine mammals maneuver better during sex

An inlaid alabaster unguent jar in the form of an ibex, with one natural horn, was found in the tomb of the pharaoh Tutankhamun.

Egypt’s Mammal Extinctions Tracked Through 6,000 Years of Art

Tomb goods and historical texts show how a drying climate and an expanding human population took their toll on the region’s wildlife

Moose Spit is Antifungal

Moose may use their antifungal saliva to keep the fungus on their favorite foods in check

A mother right whale and her calf.

Satellites Spot Whales From Space

This new method could help researchers remotely count and keep track of whale populations

Hugh, a manatee, undergoes training at Mote Marine Laboratory, learning to touch his nose to a plastic target.

A New Paradigm for Animal Research: Let Them Participate

In labs around the country, researchers are realizing that in many cases, it's easier to work with animals than against them

A new species of tapir, a herbivorous mammal, was discovered in the Amazon earlier this month.

A Recap of Our Five Favorite New Species of 2013

An owl, a cat, a dolphin, and of course the olinguito, are among this year's biggest new species finds

The new tapir, Tapirus kabomani.

Scientists Discover a New Species of Tapir; Locals Say, “We Told You!”

The new tapir is the smallest of the world's five known species but it still counts as one of the largest mammals found in South America

Cats have graced Asian households for millennia, as depicted in this 12th century print by Mao Yi.

Domestic Cats Enjoyed Village Life in China 5,300 Years Ago

Eight cat bones discovered in an archeological site in China provide a crucial link between domestic cats' evolution from wildcats to pets

Santa could make his home on floating sea ice, but the Arctic may be ice free as early as 2016, according to the U.S. Navy.

Six Ways Climate Change Is Waging War on Christmas

If Santa really lived at the North Pole, he would have drowned long ago--his icy abode is slowly melting

CT scans (left) and photos (right) of the skull

This Fossil Skull Unearthed in Tibet Is the Oldest Big Cat Ever Found

The fossil belongs to a newly discovered species called Panthera blytheae and is between four and five million years old

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What Is a Species? Insight From Dolphins and Humans

More than 70 definitions exist for what makes a species--each is applied to a different group of organisms & uses different methods for determining a label

What fMRI Can Tell Us About the Thoughts and Minds of Dogs

One neuroscientist is peering into the canine brain, and says he's found evidence that dogs may feel love

Horseshoe crab

Animal Specimens, From Fish to Birds to Mammals, Get Inked

Inspired by Japanese fish rubbings, two University of Texas biologists make spectacular prints of a variety of species at different stages of decay

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This Mouse Has Evolved An Immunity to Toxic Scorpion Venom

The bark scorpion's sting can be deadly—but one of its predators, the grasshopper mouse, is impervious to both the pain and paralyzing effects of its venom

Giraffes hanging out on the savannah

Weather Prevents Different Giraffe Species From Interbreeding

In zoos, different giraffe species will readily mate, but if the species cross paths in Kenya, their rain-driven mating cycles won't be in sync

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