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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.

  • Whales not to be counted on as 'climate savers'
    on June 5, 2023 at 10:13 pm

    Do whales increase the removal of carbon from the atmosphere? Despite some hope that this would be the case, a new study has found the amount of potential carbon capture by whales is too little to meaningfully alter the course of climate change. The team found the amount potentially sequestered by the whales was too minimal to make significant impact on the trajectory of climate change.

  • How studying feces may help us boost white rhino...
    on June 5, 2023 at 10:13 pm

    Researchers have identified significant differences in the gut microbiome of female southern white rhinos who are reproducing successfully in captivity, as compared to females who have not reproduced successfully in captivity. The work raises questions about the role that a particular genus of gut microbes may be playing in limiting captive breeding of this rhinoceros species.

  • Genomes of 233 primate species sequenced
    on June 2, 2023 at 3:50 pm

    Researchers from 24 countries have analyzed the genomes of 809 individuals from 233 primate species, generating the most complete catalog of genomic information about our closest relatives to date. The project provides new insights into the evolution of primates, including humans, and their diversity. In baboons, for example, hybridization and gene flow between different species occurred in the past and is still ongoing in several regions of their range. This makes baboons a good model for the […]

  • Study identifies boat strikes as a growing cause...
    on June 1, 2023 at 7:57 pm

    The endangered Antillean manatee faces a growing threat from boat strikes in Belize, according to a new study that raises concerns about the survival of what had been considered a relatively healthy population. Belize hosts a population of around 1,000 manatees. With the growth of tourism in recent decades, however, Belize has seen a substantial increase in boat traffic, making boat strikes an increasingly important cause of manatee deaths and injuries.

  • Genetic change increased bird flu severity during...
    on May 31, 2023 at 12:30 am

    Scientists found the virus strains that arrived in 2021 soon acquired genes from viruses in wild birds in North America. The resulting reassortant viruses have spread across the continent and caused more severe disease. - 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.

  • Ancient herbivore's diet weakened teeth and lead...
    on June 9, 2023 at 12:00 am

    A team of researchers from the University of Bristol have shed light on the life of the ancient reptile Rhynchosaur, which walked the earth between 250-225 million years ago, before being replaced by the dinosaurs.

  • New study shows land mammals traveled farther...
    on June 8, 2023 at 6:00 pm

    Human behavior changed dramatically during lockdowns in the first months of the global COVID-19 pandemic, resulting in behavioral changes of land mammals. This is according to a study published in Science by a large international research team led by Marlee Tucker, an ecologist at Radboud University. Wild mammals traveled longer distances and appeared closer to roads during strict lockdowns.

  • Lost giants: New study reveals decline in...
    on June 8, 2023 at 6:00 pm

    A new paper focuses on the size and abundance of living and non-living large African mammals. With the use of fossil abundance data it sheds light on the ecological dynamics behind the decline of these iconic creatures. The findings challenge previous assumptions about the causes of megafaunal extinctions in Africa and provide new insights into the restructuring of ecosystems over millions of years. The research is published in the journal Science.

  • In unusual orca sighting, tour spots at least 20...
    on June 8, 2023 at 7:49 am

    An uncommonly large grouping of orcas for Northern California—roughly two dozen killer whales—were spotted by a whale watching tour off the coast of San Francisco last month, likely gathered together to celebrate a successful hunt for sea lions or seals.

  • New study demonstrates wild sea otters could help...
    on June 7, 2023 at 8:29 pm

    A new study led by researchers at the Monterey Bay Aquarium and Middlebury Institute of International Studies' Center for the Blue Economy finds that sea otters attract recreational visitors to Elkhorn Slough, generating more than $3 million in revenues to local communities annually. Published in the Journal of Coastal and Ocean Economics, the study assessed the economic value provided by recreational visitors traveling to Elkhorn Slough, a central California estuary where people can enjoy […]


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.