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.

Chimpanzees have been hurling rocks at the same...
on August 28, 2026 at 1:07 pm
Some chimpanzees in West Africa repeatedly throw rocks at particular trees, creating piles of stones that can remain in use for more than a decade. Researchers think this unusual behavior may be cultural and could serve as a form of communication, territorial signaling, or something more symbolic. Camera traps and audio recordings are now being used to reveal who throws the stones and how nearby chimpanzees respond.
Scientists tracked 4,500 animals and found a...
on August 28, 2026 at 5:22 am
Scientists tracking thousands of animals found that our physical presence can reshape where wildlife moves and lives, sometimes as strongly as roads, cities, and other human development. Because different species reacted in very different ways, conservation efforts may need to become much more targeted.
190-year-old DNA reveals a hidden pangolin species
on August 26, 2026 at 12:46 pm
DNA from a nearly 190-year-old museum specimen has helped scientists confirm a distinct Himalayan pangolin species hiding in plain sight in Nepal and northern India. The discovery could give conservationists a powerful new way to trace illegally traded pangolin scales back to the species and regions being targeted by poachers.
Bird flu is spreading. Your backyard feeder could...
on August 24, 2026 at 12:49 pm
Backyard bird feeders could become unexpected hotspots for H5N1 as Australia’s bird flu outbreak spreads, bringing species together in ways that rarely occur naturally. Experts say stopping feeding is safest, while smaller amounts of food, no hand-feeding, and careful cleaning can reduce the danger.
This 23-foot crocodylian may have ruled South...
on August 19, 2026 at 9:55 am
Miocene South America was packed with giant prey—and the predators hunting them were just as spectacular. Fossil bite marks suggest crocodylians, especially the enormous Purussaurus neivensis, were more important predators than mammals in this ancient tropical ecosystem. At around seven meters long, Purussaurus may even have helped control populations of giant herbivores.

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.

Galápagos corals show El Niño events are more...
on August 28, 2026 at 10:20 pm
Temperatures have warmed dramatically across the equatorial Pacific Ocean in 2026, signaling the onset of a strong and potentially historic El Niño. These events can affect weather around the world, and the intensity of recent El Niño events is raising alarm that, as global temperatures rise, they are becoming stronger and more destructive.
Once a legend, humpback whales make a comeback in...
on August 28, 2026 at 3:40 pm
Female humpback whales off the coast of Brazil now have their pick of mates, who slap the water with their tails and jostle for attention—a scene that would have been unthinkable a few decades ago.
Bird flu is here to stay. NZ's response must keep...
on August 28, 2026 at 1:20 pm
The confirmation of Australia's first mainland death of a mammal from bird flu last week highlights New Zealand's challenge in managing the deadly H5N1 strain of the virus.
Eagles known as hunting specialists reveal an...
on August 28, 2026 at 12:40 pm
Eagles are symbols of hunting prowess. Known as top predators wherever they live, they are often assumed to kill as their primary mode of obtaining food. However, a new study published in the Journal of Raptor Research reports the first confirmed case of sustained carrion use by Verreaux's eagles (Aquila verreauxii) in the Arabian Peninsula, suggesting that the species' diet may be more adaptable than previously realized.
Australia to evacuate sub-Antarctic research base...
on August 28, 2026 at 8:40 am
Australia said Friday it would evacuate workers from a research station on a remote island over the "psychosocial" risk posed by a potential outbreak of the highly contagious H5N1 avian influenza.