Mammals

Corythomantis greeningi frogs carry potent venom in their pouts.

What’s the Difference Between Poisonous and Venomous Animals?

The first known venomous frogs, discovered in Brazil, raise some basic questions about toxic biology

Nabiré had a chronic problem with uterine cysts, and the one that killed her was inoperable.

Only Four Northern White Rhinos Are Left on Earth

One of the species' last females died this week

A mother rhino breastfeeding her baby

Why Mammals Have a Monopoly On Milk

It all started with an egg

Screen shot from "The Whale Warehouse - AudioVision Ep. 1" via Vimeo

In L.A. There’s a Warehouse Filled with Whale Bones

A video offers a tour of the Whale Warehouse, which holds a large part of the Natural History Museum of Los Angeles County's marine mammal collection

A Diana monkey, perhaps tuning in to the distress calls of fellow primates.

Monkeys Can Hack Each Other’s Grammar

Campbell’s monkeys add suffixes to alarm calls to indicate specific threats, and Diana monkeys tune in for their own benefit

A giant rice rat specimen from the National Museum of Natural History in Paris, France

How Settlers Wiped Out the Caribbean’s Rodents of Unusual Size

The eradication of rice rats in the Lesser Antilles was part of a massive mammal extinction event

The oceans are teeming with tetrapods—“four-legged” birds, reptiles, mammals and amphibians—that have repeatedly transitioned from the land to the sea, adapting their legs into fins.

Take a Deep Dive Into The Reasons Land Animals Moved to the Seas

Synthesizing decades of discoveries, scientists have revealed links between changing environments and animal movements

Determine Your Ideal Eyelash Length With Science

How the “one-third rule” protects your eyes

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

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