Mammal

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mammal : any of a class (Mammalia) of warm-blooded higher vertebrates (such as placentals, marsupials, or monotremes) that nourish their young with milk secreted by mammary glands, have the skin usually more or less covered with hair, and include humans — Merriam-Webster See also OneLook

Encyclopedia

Mammals are the vertebrates within the class Mammalia, a clade of endothermic amniotes distinguished from reptiles (including birds) by the possession of a neocortex (a region of the brain), hair, three middle ear bones, and mammary glands. Females of all mammal species nurse their young with milk, secreted from the mammary glands. — Wikipedia

Mammal (Encyclopædia Britannica)

Mammals (One Zoom)
Mammalia Linnaeus, 1758 (Catalogue of Life)
Mammal (WolframAlpha)

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Adventures

Explore related posts on Cosma …

Fat Bear Award? - I just read this fun story on CNN! Fat Bear Week 2025 is the Distraction Everybody Needs (Lilit Marcus, CNN) I couldn’t help but click on it because I was curious, and I did need some distraction. So, there is a “Fat Bear Award” and it is pretty well known. It even has a Wikipedia … Continue reading Fat Bear Award?
Goat Yoga? - Feeling a little stressed out and need a quick relaxation break? How about a bit of goat yoga? Wait, Goat Yoga? If you haven’t heard of it yet, then it might strike you as a bit strange, but it’s become a real craze over the last year or two. Here’s a link to a short … Continue reading Goat Yoga?
Lions, Tigers & Bears… - The advent of360° cameras brought a plethora of 360° videos about animals. Many are conservation oriented like these about lions and tigers. METAVRSE (YouTube Channel) METAVRSE (Official Website) AirPano VR (YouTube Channel) AirPano VR (Official Website) National Geographic is a prolific producer of them. Here is a link to an example. Swimming With Bears in … Continue reading Lions, Tigers & Bears…
Nutty Nature News - I’ve been updating the “nature” related pages on this site, so I’ve spent an abnormal amount of time perusing nature related sites for the last few weeks. Along the way I came across more than my fair share of odd nature stories. Many of them were viral, so you may have seen some of them … Continue reading Nutty Nature News
Panda’s Playtime - There’s nothing cuter watching two pandas playing! Here’s a YouTube video from the Atlanta’s Zoo with a serious “aawwwhhhhh” factor. Zoo Atlanta (YouTube Channel) Zoo Atlanta (Official Website) Adorable! However, it turns out there’s something even cuter. That’s pandas playing in the snow. They love it, apparently. Check out this video from Smithsonian’s National Zoo. … Continue reading Panda’s Playtime
Super Sexy, Singing Mice - It’s not often that mice sneak into the news, but they do manage it from time to time. One story that gotten a lot of attention is about how researchers created “super mice” by injecting nanoparticles into their eyes to give them “night vision.” Here are links to the stories about that research. A Shot … Continue reading Super Sexy, Singing Mice
Under the Ice - To paraphrase J.R.R. Tolkien’s famous words in The Lord of the Rings, “It’s a dangerous business, clicking on a link. You glance at a story, and if you don’t watch out, there’s no knowing where you might be swept off to.” This week I innocently clicked on a link to this story from the American … Continue reading Under the Ice
Watchable Whales - A popular tourist activity in Boston is whale watching (Trip Advisor). That is because it’s only a short 25 mile trip out to Stellwagen Bank National Marine Sanctuary (Wikipedia). Stellwagen Bank hosts several different species of large whales, including humpbacks, finbacks, minkes, pilot whales and right whales. If you’ve never seen a whale in person, … Continue reading Watchable Whales

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Inspiration

World’s strangest looking animals – Mammals (ORENYARO, YouTube Video)

Articles about Mammals (Big Think)

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Innovation

Science

Mammalogy is the study of mammals – a class of vertebrates with characteristics such as homeothermic metabolism, fur, four-chambered hearts, and complex nervous systems. Mammalogy has also been known as “mastology,” “theriology,” and “therology.” The major branches of mammalogy include natural history, taxonomy and systematics, anatomy and physiology, ethology, ecology, and management. — Wikipedia

Mammalogy (Encyclopædia Britannica)

The Science of Mammalogy (The American Society of Mammalogists)

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Preservation

Museum

Mammals! (The Brain Scoop, YouTube Playlist)

Kenneth E. Behring Family Hall of Mammals (Smithsonian National Museum of Natural History)

Mammalogy (Museum of Comparative Zoology, Harvard University)

Library

DDC: /599 Mammals (Library Thing)
Subject: Mammals (Library Thing)

Subject: Mammals (Open Library)

LCC: QL 700 Mammals (UPenn Online Books)
Subject: Mammals (UPenn Online Books)

LCC: QL 700 Mammals (Library of Congress)
Subject: Mammals (Library of Congress)

Subject: Mammals (WorldCat)

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Participation

Education

Moving Mammals (OLogy, American Museum of Natural History)
Mammal Locomotion Flip Books (OLogy, American Museum of Natural History)

Introducing the Mammals (Biology4Kids)

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources

Community

More News …

Mammals News -- ScienceDaily Mammals in the news, wild mammals, mammal conservation efforts, and domesticated mammals.

Scientists discover a bizarre “devil flower”...
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Bats carry dangerous viruses without getting...
on September 3, 2026 at 11:56 am
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Scientists discover why snake embryos twist into...
on September 1, 2026 at 12:38 pm
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Fossil feet may be misleading scientists about...
on August 31, 2026 at 12:38 pm
Wild monkeys in West Africa can climb vertical tree trunks using foot flexibility scientists did not realize they possessed. The discovery challenges a key assumption about what the last common ancestor of humans and chimpanzees looked like and how it moved.
Dogs may hold surprising clues to human longevity
on August 29, 2026 at 12:47 pm
Dogs and humans may have more in common when it comes to aging than scientists realized. Researchers with the Dog Aging Project found that patterns of small molecules in dogs’ blood were linked to longer or shorter lifespans in remarkably similar ways to those seen in people. These metabolic “fingerprints” could offer clues about the biological processes that drive aging, including metabolism, inflammation, and cellular stress.

Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

Excavations at Prado Vargas now span 140 square...
on September 7, 2026 at 5:00 pm
The 2026 field season at Prado Vargas Cave, located in the village of Cornejo in the northern province of Burgos, Spain, within the Ojo Guareña karst complex, has expanded the excavation of Neanderthal sublevel 4D by 32 square meters (344 square feet), bringing the total excavated area to 140 square meters (1,507 square feet). More than 1,500 animal remains and stone tools were recovered, strengthening the interpretation of this roughly 46,000-year-old layer as a large Neanderthal camp.
Behind the scenes: The science that confirmed...
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How bird movements are helping researchers track...
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While the highly virulent avian influenza strain has only recently been discovered on Australian shores, researchers at Deakin University have been working behind the scenes for years, anticipating what an outbreak might look like.
The extinct American 'cheetah' was not a cheetah...
on September 6, 2026 at 3:00 pm
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Researchers tune into Arctic under-ice sounds and...
on September 4, 2026 at 10:20 pm
Beneath the Arctic Ocean is an orchestra featuring natural and human composers, from cracking sea ice and whistling beluga whales to humming shipping-vessel engines. Researchers from MIT Lincoln Laboratory heard some of this cacophony when analyzing data from commercial off-the-shelf sensors that they integrated and deployed in 2024 during the U.S. Navy's Operation Ice Camp (OIC). This past March, during OIC 2026, the researchers returned to the Arctic with a higher-fidelity version of one of […]