Mammals

A subpopulation of orcas in the Strait of Gibraltar (not pictured) have interacted with roughly 700 boats since 2020, causing five of the vessels to sink.

Orcas Sink 50-Foot Yacht Off the Coast of Morocco

The vessel's two passengers were evacuated onto an oil tanker in the Strait of Gibraltar. The incident marks the fifth vessel the mammals have sunk in recent years

A mother Siphonops annulatus with newborn babies.

Inside the Wild Ways Many Creatures Make Milk

Mammals aren’t the only animals that provide nutritious secretions for their young

Male belugas were more likely than females to change the shape of their melons, or foreheads.

Belugas May Communicate by Changing the Shape of Their Squishy Foreheads

Scientists documented five different melon shapes among the marine mammals living in captivity: push, flat, lift, shake and press

In the late 1960s, Bob Paine described the Pisaster sea star as a “keystone species” in Pacific Northwest tide pools. The concept has since taken on a life of its own.

Has the Term 'Keystone Species' Lost Its Meaning?

More than 50 years after Bob Paine’s experiment with starfish, hundreds of species have been pronounced “keystones” in their ecosystems

Sperm whales communicate by making clicks.

Scientists Discover a 'Phonetic Alphabet' Used by Sperm Whales, Moving One Step Closer to Decoding Their Chatter

Researchers used artificial intelligence to spot patterns in recordings of the marine mammals' vocalizations, uncovering the "building blocks of whale language"

A bat clings to the roof of an abandoned cellar—an unlikely but vital habitat type for Europe’s bats.

How a Fantastical Labyrinth Became a Crucial Habitat for Europe’s Bats

After scientists documented the flying mammals in the Piusa Sand Caves, dug by miners a century ago, conservationists strove to protect the vital habitat

More than 1,000 sea lions gathered at San Francisco's Pier 39 last week, marking the largest congregation of the marine mammals at the city's Fisherman's Wharf in about 15 years.

More Than 1,000 Sea Lions Gather at San Francisco's Pier 39, the Largest Group in 15 Years

The pinnipeds came to the area to feed on anchovies and herring as they prepare for breeding season

A moose moves through the forest.

How Should Colorado Handle Its Booming Moose Population?

Roughly 3,000 animals now roam the state's mountain ranges

160 pilot whales, mainly adult females with several young calves, stranded themsleves in shallow waters on Thursday morning in Western Australia.

Rescuers Save 130 Beached Pilot Whales in Western Australia After Mass Stranding

An additional 29 whales died, officials reported last week, while the reason behind the stranding remains unknown

A variety of plants and animals go through periods where they are dormant or in the dark.

Move Over, Cicadas: These Living Things ‘Go Dark’ For a Long Time, Too

From frogs to orchids, many organisms go dormant or move underground for lengthy stints

Antonia, one of the new black-footed ferret clones. The first black-footed ferret clone was born in 2020. The two new ferrets are the second and third successful clones.

Scientists Clone Two Black-Footed Ferrets From Frozen Tissues in Conservation Effort

The aim of cloning the animals is to increase the genetic diversity of the endangered species

Sea otters float amid a forest of kelp off California’s Central Coast.

Sea Otters Have Helped Bolster California’s Kelp Forest

A study that looks back more than 100 years shows that where the animals have thrived, underwater forests have, too

Sir David Attenborough

How David Attenborough Went From Delighting at the Natural World to Pleading for Its Future

The environmental icon’s latest series, “Mammals,” showcases the threats humanity has created for our relatives

A person has tested positive for the H5N1 strain of bird flu just days after livestock across four states were reported to be infected.

First Human Case of Bird Flu in Texas Confirmed, Following Infections in Cattle—Here's What to Know

This marks only the second time in U.S. history that a human has contracted the H5N1 strain of avian influenza

Eastern coyotes—a subspecies that has coyote, wolf and domestic dog DNA—run in a West Virginia forest.

Five Shocking Animal Hybrids That Truly Exist in Nature, From Narlugas to Grolar Bears to Coywolves

The now-famous “virgin” stingray Charlotte is not having hybrid babies, scientists say. But in nature, distinct species sometimes interbreed to produce surprising offspring

This artistic interpretation shows what Pebanista yacuruna might have looked like some 16 million years ago.

New Extinct Species of Giant Dolphin Discovered in Peru From a 16-Million-Year-Old Skull

Pebanista yacuruna is the largest freshwater dolphin ever found, but it is more closely related to today's river dolphins of South Asia than those in the Amazon

An elephant seal pup on South Georgia Island

Why Did Seals and Sea Lions Never Commit to a Life Fully at Sea?

While whales moved from living on land to an existence immersed in water, pinnipeds embraced an amphibious lifestyle

Beluga whales are one of five species of whale that undergo menopause. The new study finds that females in these five species live decades longer than females of similarly sized species.

Whales That Go Through Menopause Live Longer and May Help Care for Grandchildren

Alongside humans, five species of toothed whales are known to experience menopause. A new study suggests they evolved the trait to increase their lifespan

For rabbits and hares, females typically weigh more than males, according to a new study.

For Most Mammal Species, Males Actually Aren't Larger Than Females, Study Finds

New research upends a long-held theory that male mammals tend to be bigger than their female counterparts

Asian elephants were observed burying calves between 3 months and 1 year old that had died after experiencing infections and malnutrition.

Asian Elephants Bury Their Dead, New Research Suggests

In India, five dead calves were found buried on their backs in irrigation ditches, with evidence that multiple herd members had participated in the burials

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