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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


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)



Articles about Mammals (Big Think)




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)




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)




Introducing the Mammals (Biology4Kids)

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



Careers in Mammalogy (American Society of Mammalogists)

Zoologists and Wildlife Biologists (CareerOneStop, U.S. Department of Labor, Employment and Training Administration)


American Society of Mammalogists
The Mammal Society


Journal of Mammalogy (American Society of Mammalogists)
Mammalian Species (American Society of Mammalogists)
Mammal Review (The Mammal Society)

Mammals (EurekaAlert, American Association for the Advancement of Science)
Mammals (bioRxiv: Preprint Server for Biology, Cold Spring Harbor Laboratory)
Mammals (JSTOR)
Mammals (Science Daily)
Mammals (Science News)
Mammals (
Mammals (NPR Archives)



Mammal (


More News …

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

  • Vulnerability of England's only resident...
    on November 29, 2023 at 4:24 pm

    New research has provided a detailed examination of England's bottlenose dolphin population's existence and the challenges it faces from human activities and environmental factors on a daily basis.

  • Earliest known European common hippopotamus...
    on November 23, 2023 at 12:23 am

    Modern hippos first dispersed in Europe during the Middle Pleistocene, according to a new study.

  • Skunks' warning stripes less prominent where...
    on November 22, 2023 at 3:10 am

    Striped skunks are less likely to evolve with their famous and white markings where the threat of predation from mammals is low, scientists have discovered.

  • Curators and cavers: How a tip from a citizen...
    on November 21, 2023 at 10:53 pm

    Scientists and colleagues from Utah's caving community have published the first research from their collaborative fieldwork effort deep in Utah's caves. The journal's feature article reveals why caves make such compelling research archives; what was uncovered in Boomerang Cave in northern Utah; why skeletal remains provide new access to hard-to-get data from the recent past; and offers a new zoological baseline for mammalian changes in an alpine community.  

  • Researchers develop comprehensive genetic map for...
    on November 20, 2023 at 5:41 pm

    Researchers have determined the gene mutation responsible for an observable trait in bison -- albinism. - latest science and technology news stories internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Toxic chemicals in UK whales and dolphins are...
    on December 2, 2023 at 3:30 pm

    Almost half of marine mammals around the UK are being poisoned by banned chemicals.

  • Researchers sound out Canadian military's plan to...
    on December 1, 2023 at 8:25 pm

    A new study from Simon Fraser University researchers examines the Canadian military's efforts to reduce the impacts of underwater noise pollution on species during training exercises in the Pacific Ocean but caveat that more can still be done.

  • Scientists navigate uncharted waters in fish...
    on December 1, 2023 at 7:00 pm

    Upon infection or immunization, all jawed vertebrate species generate proteins called antibodies that bind and neutralize pathogens. Strong and long-lasting antibody responses in warm-blooded species such as mammals are produced in secondary lymphoid microstructures (SLMs) among which germinal centers (GCs) are the centerpiece.

  • Two methods for demonstrating how photolyase...
    on December 1, 2023 at 1:55 pm

    Two teams of bio-researchers have developed similar processes for demonstrating how photolyase isolates use light to repair damaged DNA. In their papers, both published in the journal Science, the two groups outline their stop-motion-animation-type process to capture the action in detail.

  • Tiny worms are helping scientists better...
    on November 30, 2023 at 7:04 pm

    Studying sex from just the male perspective misses half the experience. But much of what we know about the origins of reproductive cells comes from looking at sperm and egg formation separately—or only focusing on sperm.


Here are links to pages about closely related subjects.

Knowledge Realm

Terrestrial   (Earth)

Sphere Land, Ice, Water (Ocean), Air, Life (Cell, Gene)
Ecosystem Forest, Grassland, Desert, Arctic, Aquatic

Tree of Life
Microorganism Virus
Prokaryote Archaea, Bacteria
Eukaryote Protist, Fungi, Algae, Protozoa (Tardigrade)
Plant Flower, Tree
Cnidaria Coral, Jellyfish
Cephalopod Cuttlefish, Octopus
Crustacean Lobster, Shrimp
Arachnid Spider, Scorpion
Insect Ant, Bee, Beetle, Butterfly
Fish Seahorse, Ray, Shark
Amphibian Frog, Salamander
Reptile Turtle, Tortoise, Dinosaur
Bird Penguin, Ostrich, Owl, Crow, Parrot
Mammal Platypus, Bat, Mouse, Rabbit, Goat, Giraffe, Camel, Horse, Elephant, Mammoth
Walrus, Seal, Polar Bear, Bear, Panda, Cat, Tiger, Lion, Dog, Wolf
Cetacean Whale, Dolphin
Primate Monkey, Chimpanzee, Human


1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.