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 — Webster
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.
Mammals include the largest animal on the planet, the blue whale. The basic body type is a terrestrial quadruped, but some mammals are adapted for life at sea, in the air, in trees, underground or on two legs. The largest group of mammals, the placentals, have a placenta, which enables the feeding of the fetus during gestation. Mammals range in size from the 30–40 mm (1.2–1.6 in) bumblebee bat to the 30-meter (98 ft) blue whale. With the exception of the five species of monotreme (egg-laying mammals), all modern mammals give birth to live young. Most mammals, including the six most species-rich orders, belong to the placental group. The largest orders are the rodents, bats and Soricomorpha (shrews and allies). The next three biggest orders, depending on the biological classification scheme used, are the Primates (apes and monkeys), the Cetartiodactyla (whales and even-toed ungulates), and the Carnivora (cats, dogs, seals, and allies). — Wikipedia
Mammals News -- ScienceDaily Mammals in the news, wild mammals, mammal conservation efforts, and domesticated mammals.
- Revealing the genome of the common ancestor of...on September 28, 2022 at 1:48 pm
An international team has reconstructed the genome organization of the earliest common ancestor of all mammals. The reconstructed ancestral genome could help in understanding the evolution of mammals and in conservation of modern animals. The earliest mammal ancestor likely looked like the fossil animal 'Morganucodon' which lived about 200 million years ago.
- Study finds all African carnivores at risk for...on September 27, 2022 at 12:07 am
A new study assessing 91 African carnivores to identify gaps in capacity necessary for their conservation found that many species that are currently classified as 'least concern' on the International Union for the Conservation of Nature Red List of Threatened Species had high percentages of their range at risk of contraction.
- Family ties give animals reasons to 'help or...on September 26, 2022 at 3:49 pm
The structure of family groups gives animals an incentive to help or harm their social group as they age, new research shows.
- Why whales don't get brain damage when they swimon September 23, 2022 at 1:08 pm
Special blood vessels in whale brains may protect them from pulses, caused by swimming, in their blood that would damage the brain, new research has suggested.
- The no-tech way to preserve California's state...on September 22, 2022 at 2:32 pm
Though it is disappearing, California's official state grass has the ability to live for 100 years or more. New research demonstrates that sheep and cattle can help it achieve that longevity.
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.
- Hidden microbiome fortifies animals, plants tooon September 29, 2022 at 8:40 pm
The microbiome is the collection of microbes that colonize a habitat, human body or otherwise. Because of pioneering microbiome research at Washington University School of Medicine in St. Louis, people around the world now understand much more about the fundamental role of gut microbes in human health and disease.
- New bacterial species discovered in the intestineon September 29, 2022 at 5:24 pm
Whether plant, animal or human, living organisms are colonized by a multitude of bacteria. Research findings in recent years show that bacteria not only co-exist with their host, but form mutual interactions in the form of a symbiosis that can benefit both the bacterium and the host.
- War disturbs nature permanently, study findson September 29, 2022 at 3:10 pm
Using long-term data, researchers studied the effects of large mammal declines—caused by civil war and poaching—on the species composition of savanna ponds. Guillaume Demare conducted the research as part of his doctoral studies at the Museum für Naturkunde Berlin and Freie Universität, and the study is published in Global Change Biology.
- Coyotes in New York City do not need to rely on...on September 28, 2022 at 7:50 pm
Researchers in New York City have analyzed the DNA of urban coyotes and discovered that the coyotes eat a variety of native prey species and supplement this diet with human-sourced food items. The study is published in PeerJ.
- You don't have to be a cute koala to be an...on September 28, 2022 at 4:27 pm
Remember the popularity contests of high school? Often our athletic, genetically gifted classmates got the most attention: the school captain, the footy team captain, the prom queen. But popularity contests don't just exist in school. And in the world of conservation, it can be a matter of survival for the "winners" and "losers."
Here are links to pages about closely related subjects.
Life Cell, Gene, Tree of Life
Plant Flower, Tree
Invertebrate Cuttlefish, Octopus, Ant, Bee, Butterfly, Spider, Lobster
Vertebrate Fish, Seahorse, Ray, Shark, Frog, Turtle, Tortoise, Dinosaur
Bird, Ostrich, Owl, Crow, Parrot
Mammal Bat, Rabbit, Giraffe, Camel, Horse, Elephant, Mammoth
Whale, Dolphin, Walrus, Seal, Polar Bear, Bear, Cat, Tiger, Lion, Dog, Wolf
Monkey, Chimpanzee, Human