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mammals

Mammals are an important group of vertebrates characterized by the presence of mothers feeding their offspring. Notable characteristics of mammals include lactation, body hair, endothermy (warm-blooded animals), and a four-chambered heart. There are many species of mammals, living in almost all ecosystems on Earth, from the deep sea to the mountains, from tropical rainforests to the cold polar regions.

  • scientific name:Mammalia

  • Features

    • suckle:Females have mammary glands that secrete milk to feed their young.

    • Body hair:Most mammals are covered with hair.

    • Endothermic:Maintaining a constant body temperature through metabolism.

    • Four-chambered heart:Mammals have four-chambered hearts to ensure efficient oxygen delivery.

    • viviparous:Most mammals reproduce by giving birth to live young, but some species, such as monotremes (e.g. the platypus), lay eggs.

  • Habitat:Almost all habitats on Earth, including land, ocean, fresh water, polar regions, etc.

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Mammal classification table

Mammals are numerous and can be subdivided based on different biological characteristics. Mammals are roughly divided into three subclasses:

  1. Monotremata: Oviparous mammals.

  2. Marsupialia: Kangaroos, koalas, etc., whose young continue to develop in a pouch outside the mother's body.

  3. Eutheria: Viviparous mammals, the most abundant species, including humans, lions, whales, etc.

The following is a detailed classification table of mammals, including all orders, families, genera and typical animals:

sortOrderFamilyGenusExamples
MonotremataMonotremataOrnithorhynchidaeOrnithorhynchusPlatypus, Echidna


TachyglossidaeEchidnaEchidna
MarsupialiaMarsupialiaMacropodidaeMacropusKangaroos, wombats, possums


PhascolarctidaePhascolarctoskoala


DasyuridaeDasyurusBandicoot, Tasmanian devil
EutheriaCarnivoraCanidaeCanisWolf, dog, fox


FelidaeFelisHouse cat, lion, tiger


UrsidaeUrsusBlack bear, brown bear, polar bear

PerissodactylaEquidaeEquusHorse, donkey, zebra


RhinocerotidaeRhinocerosWhite rhino, black rhino


TapiridaeTapirusTapirus

ArtiodactylaBovidaeBosCattle, antelopes, sheep


CervidaeCervusDeer, reindeer, sika deer


SuidaeSusWild boar, domestic pig

CetaceaBalaenidaeMegapteraHumpback whale, blue whale


DelphinidaeDelphinusDolphins, killer whales

PrimatesCercopithecidaePongoOrangutans, gibbons, monkeys


HominidaeHomoHumans, chimpanzees, orangutans

RodentiaSciuridaeSciurusSquirrels, Ground Squirrels


CastoridaeCastorbeaver


MuridaeMusHouse mouse, vole

ChiropteraVespertilionidaeMyotisSmall bat, big bat

LagomorphaLeporidaeOryctolagusRabbit, hare

Characteristics and Adaptations of Mammals

Mammals are one of the most diverse groups in the biological world. Here are the main characteristics of mammals and how they adapt:


1. Breastfeeding

A notable feature of mammals is that mothers secrete milk through their mammary glands to feed their offspring. This allows mammal cubs to receive adequate nutritional support after birth, increasing their survival rate.


2. Body hair

Almost all mammals have body hair, which not only helps to keep warm, but also plays a camouflage or display function in some species. For example, the white hair of polar bears helps them camouflage in the snow and reduce the risk of being discovered by prey.


3. Homeothermy

Mammals maintain a stable body temperature through metabolism, which allows mammals to maintain a suitable temperature regardless of changes in the outside temperature. This feature allows mammals to survive in a variety of environments, including extreme environments such as polar regions and deserts.


4. Viviparity

Most mammals reproduce by giving birth to live young, which allows the embryo to receive more stable nutritional support in the mother's body and be more viable after birth. Some species, such as kangaroos and koalas, adopt marsupial parenting.


5. Diet

Mammals have a variety of diets, from herbivorous to carnivorous and omnivorous. Some species (such as bats) have even evolved to suck blood. Different diets allow mammals to find living space in a variety of ecological environments.


Summary: Mammals are the most advanced animals with the most perfect physiological functions. There are more than 4,000 existing mammals. Almost all mammals are warm-blooded. Feeding their offspring with breast milk is one of their most notable characteristics. Mammals include nearly 30 orders, including Monotremes, Carnivores, Primates, Perissodactyla, and Artiodactyla.

Carnivora Primates Rodents Chiroptera Eulipotyphla Ungulata Cetacea Lagoiformes Pangolins Proboscidea Monotremata
Cercocebus agilis

Cercocebus agilis

Cercocebus agilis,Agile mangabey,White-browed monkey

Features:The face has a white border

Agile mangabey (scientific name: Cercocebus agilis) is also known as Agile mangabey in English. There is no subspecies.Agile mangabey lives in small groups of about 8-22 individuals, usually led by an adult male. The diet is diverse, including fruits, sprouts, seeds, young leaves, mushrooms and inse...

Theropithecus gelada

Theropithecus gelada

Theropithecus gelada,Gelada Baboon,,Gelada Baboon

Features:It is named because of the tuft of hair at the end of its tail, which resembles a lion's tail.

Gelada Baboon (scientific name: Theropithecus gelada) is a large monkey with two subspecies.There is only one species of Gelada baboons in existence, and its distribution is limited to the Ethiopian Plateau, but in prehistoric times, it was once the dominant type on the African grasslands, with many...

Papio ursinus

Papio ursinus

Papio ursinus,Chacma Baboon

Features:The skull is large, the face is long, and the face is curved downward.

Papio ursinus (scientific name: Chacma Baboon) has two subspecies and is the largest baboon.Papio ursinus is usually active on the ground during the day, is good at climbing rocks, and has the ability to climb trees. Because of its long fur, it is very cold-resistant. It is a social animal that like...

Papio papio

Papio papio

Papio papio,Guinea Baboon

Features:The facial skin is purple-black, the body hair is rough, and the hair color is reddish brown. There is significant geographical variation.

Guinea Baboon (scientific name: Papio papio) is a smaller species in the same genus.Guinea Baboons usually move on the ground during the day, are good at climbing rocks, and have the ability to climb trees. It is a social animal that likes to live in groups, sometimes forming large groups, each of w...

Papio cynocephalus

Papio cynocephalus

Papio cynocephalus,Yellow Baboon

Features:The overall color of the fur is brown, mostly tan, but some parts also have black tones.

Papio cynocephalus (scientific name: Papio cynocephalus), also known as Yellow Baboon, has three subspecies.Grassland baboons are diurnal animals that live in groups. Each group usually has 30-60 individuals. The group consists of multiple males and multiple females, and any male has the possibility...

Papio anubis

Papio anubis

Papio anubis,Olive Baboon,Anubis Baboon, Olive Baboon

Features:The coat is characterized by a dark olive-grey colour, with males having a large mane.

The East African baboon (scientific name: Papio anubis) is also known as the Olive Baboon because its appearance looks similar to olive color. Its other name, Anubis Baboon, comes from the Egyptian god Anubis. Its head looks like a true portrayal of Anubis from the side.East African baboons are diur...

Rungwecebus kipunji

Rungwecebus kipunji

Rungwecebus kipunji,Kipunji,Rungwe Chipanzi Monkey, Highland White-browed Monkey, Rungwe Capuchin Monkey

Features:First new primate species confirmed in Africa in 83 years

Kipunji monkey (scientific name: Rungwecebus kipunji) is a new monkey species discovered in the highland forests of Tanzania in 2005. It is a new genus of animal. This new monkey species was originally called the highland white-browed monkey, but now it has been renamed the "Kipunji" monke...

Lophocebus aterrimus

Lophocebus aterrimus

Lophocebus aterrimus,Black Mangabey

Features:The top of the head has a tall black crest and white eyelids.

Black Mangabey (scientific name: Lophocebus aterrimus) is a medium-sized arboreal monkey with two subspecies.Black Mangabey lives in groups, usually 9-16 individuals, with multiple males and multiple females forming a family group. Each group lives in a family territory of about 48 to 70 hectares, w...

Lophocebus albigena

Lophocebus albigena

Lophocebus albigena,Grey-cheeked Mangabey, White-cheeked white-maned monkey

Features:The eyelids are white and have a prominent crest.

Grey-cheeked Mangabey (scientific name: Lophocebus albigena) is also known as Grey-cheeked Mangabey in English. There are three subspecies.Grey-cheeked Mangabey live in groups, usually consisting of 15 members in a family group, led by a male mangabey. There is a strict hierarchy within the close-kn...

Macaca tonkeana

Macaca tonkeana

Macaca tonkeana,Tonkean Macaque, black baboon, golden macaque

Features:

The scientific name of the Tonkean macaque is Macaca tonkeana, and its foreign name is Tonkean Macaque. It is said to often attack crops. It lives in trees and on land and is active during the day. Listed in the "World Conservation Union" (IUCN) ver: 2008 Red List of Pr...

Macaca sylvanus

Macaca sylvanus

Macaca sylvanus,Barbary Macaque,Barbary macaque, Barbary macaque, Gibraltar ape

Features:Stout body, short tail, and cheek pouches

Mediterranean macaque (scientific name: Macaca sylvanus) is also known as Barbary Macaque in English. It is an extremely tough animal.The mountains where Mediterranean macaques live are only half the height of the Ethiopian highlands, living at an altitude of about 2,100 meters, which is generally a...

Macaca sinica

Macaca sinica

Macaca sinica,Toque Macaque,Sri Lankan monkey, Lanka macaque, temple monkey

Features:The hair in the center of the head resembles a crown

Sri Lankan macaques (scientific name: Macaca sinica) are also known as Toque Macaques. They are primates with three subspecies. This type of monkey is more common in the "Cultural Triangle" area of Sri Lanka where ancient temples are scattered, so it is nicknamed "temple monkey"....

Macaca slienus

Macaca slienus

Macaca slienus,lion-tailed macaque,Lion-tailed macaque

Features:The face is surrounded by mane and tail like a lion's tail

Lion-tailed macaque (Macaca slienus), also known as lion-tailed macaque, is an Old World monkey that lives in the Western Ghats and South India.Lion-tailed macaques are good at climbing and jumping, can swim and imitate human movements, and can express joy, anger, sorrow, and happiness. They mostly...

Macaca siberu

Macaca siberu

Macaca siberu,Siberut Macaque

Features:Named after the place where it is distributed

The scientific name of the Siberut Macaque is Macaca siberu, and its foreign name is Siberut Macaque. It is a species endemic to Siberut Island in the Mentawai Islands west of Sumatra, Indonesia.The Siberut Island macaques mainly feed on leaves, twigs, wild vegetables, etc., and occasionally prey on...

Macaca radiata

Macaca radiata

Macaca radiata,Bonnet Macaque

Features:It gets its name from the thick and long hair on its head that resembles a hat.

The scientific name of the crested macaque is Macaca radiata, and its foreign name is Bonnet Macaque. It is a kind of macaque in southern India. It is agile and sometimes goes to orchards and food stores to grab food.Listed in the "World Conservation Union" (IUCN) ver.: 2008 Red List of Pr...

Macaca pagensis

Macaca pagensis

Macaca pagensis,Macaca pagensis

Features:

The scientific name of the Mentawai macaque is Macaca pagensis, and its foreign name is Macaca pagensis. It lives in trees or semi-trees, usually in small family groups, but also in large groups. Most of them can walk upright, but not for long. They are mostly active during the day.Listed in the &qu...

Macaca nigra

Macaca nigra

Macaca nigra,Celebes Crested Macaque, Sulawesi crested monkey, Sulawesi monkey, crested monkey, Sulawesi macaque, black monkey

Features:A unique punk-style cockscomb is formed on the top of the head

The black-crowned macaque (scientific name: Macaca nigra) is also known as Celebes Crested Macaque. It is a medium to large monkey.The black-crowned macaque is active during the day and rests at night; it lives in groups. It is equally agile on the ground and in the trees, and is good at swimming. T...

Macaca munzala

Macaca munzala

Macaca munzala

Features:It was only confirmed as a new species in 2004.

The Southern Tibetan Macaque (scientific name: Macaca munzala) is a typical macaque animal with no subspecies.The Southern Tibetan Macaque is native to the southern Tibet region of China (now occupied by India). Its species name "munzala" comes from the Zhairang Monpa tribe, pronounced &qu...

Cercopithecus pogonias

Cercopithecus pogonias

Cercopithecus pogonias

Features:The main color of the hair on the body is gray-blackThe main color of the hair on the body is gray-black

The crested long-tailed monkey Cercopithecus pogonias likes to live in the forest and live in trees for a long time. It is rare to see a crested long-tailed monkey walking on the ground, except for those raised in zoos. The crested long-tailed monkeys seen in China are basically introduced and distr...

Cercopithecus petaurista

Cercopithecus petaurista

Cercopithecus petaurista

Features:Known for its diverse voice

The scientific name of the small white-nosed long-tailed monkey is Cercopithecus petaurista. It eats a variety of plants, mainly fruits, seeds, leaves and young shoots, and sometimes insects. Its hearing, smell, vision and touch systems are all very sensitive and complex, and it is especially famous...

Known for its diverse voice

Known for its diverse voice

Known for its diverse voice

Features:A striking, bright white patch on the nose

The white-nosed monkey (scientific name: Cercopithecus nictitans) is also known as Putty-nosed Monkey in English. There are three subspecies.The white-nosed monkey is usually social, with 12-30 monkeys forming a group. They are mainly active in the middle canopy and often display acrobatic movements...