A mammal (from Latin mamma ‘breast’) is a vertebrate animal of the class Mammalia. Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three middle ear bones.

The largest orders of mammals, by number of species, are the rodents, bats, and eulipotyphlans (including hedgehogs, moles and shrews). The next three are the primates (including humans, monkeys and lemurs), the even-toed ungulates (including pigs, camels, and whales), and the Carnivora (including cats, dogs, and seals).

Order : Carnivora

Carnivora is an order of placental mammals specialized primarily in eating flesh, whose members are formally referred to as carnivorans. The order Carnivora is the sixth largest order of mammals, comprising at least 279 species on every major landmass and in a variety of habitats, ranging from the cold polar regions of Earth to the hyper-arid region of the Sahara Desert and the open seas. Carnivorans exhibit a wide array of body plans, varying greatly in size and shape.

Family : Mustelidae

The Mustelidae are a diverse family of carnivoran mammals, including weasels, badgers, otters, polecats, martens, grisons, and wolverines.

Lutrogale perspicillata

Smooth-Coated Otter

Singapore

Lutrogale perspicillata

Smooth-Coated Otter

Singapore

Lutrogale perspicillata

Smooth-Coated Otter

Singapore

Family : Viverridae

Viverridae is a family of small to medium-sized feliform mammals, comprising 14 genera with 33 species.

Viverra tangalunga

Malayan civet

Sabah, Malaysia

Viverra tangalunga

Malayan civet

Sabah, Malaysia

Order : Pilosa

The order Pilosa is a clade of xenarthran placental mammals, native to the Americas. It includes anteaters and sloths (which include the extinct ground sloths). The name comes from the Latin word for “hairy”

Family : Bradypodidae

These are three-toed sloths with five living species.

Bradypus variegatus

Brown-throated Sloth

Reserva Nacional Pacaya-Samiria, Peru

Order : Primates

Primates is an order of mammals, which is further divided into the strepsirrhines, which include lemurs, galagos, and lorisids; and the haplorhines, which include tarsiers and simians (monkeys and apes).

Primates have relatively large brains compared to other mammals and rely more on visual acuity than the sense of smell, which dominates in most mammals. These traits are more pronounced in monkeys and apes and less so in lorises and lemurs. While some primates like gorillas, humans, and baboons are primarily ground-dwelling, all species are adapted for climbing. Arboreal techniques include leaping and brachiation, while terrestrial locomotion involves bipedalism and quadrupedal knuckle-walking.

Primates are among the most social of all animals, forming pairs or family groups, uni-male harems, and multi-male/multi-female groups.

Family : Cercopithecidae

These are Old World monkeys that include macaques, langurs, colobus, etc.

Macaca fascicularis

Long-tailed Macaque

Singapore

Macaca fascicularis

Long-tailed Macaque

Singapore

Macaca nemestrina

Southern Pig-tailed Macaque

Sabah, Malalaysia

Macaca nemestrina

Southern Pig-tailed Macaque

Pahang, Malalaysia

Macaca nigra

Celebes Crested Macaque

Tangkoko, Sulawesi, Indonesia

Macaca nigra

Celebes Crested Macaque

Tangkoko, Sulawesi, Indonesia

Macaca nigra

Celebes Crested Macaque

Tangkoko, Sulawesi, Indonesia

Family : Hominidae

The Hominidae, whose members are known as the great apes or hominids, are a taxonomic family of primates that includes eight extant species in four genera: Pongo (orangutan), Gorilla, (chimpanzee and bonobo) and Homo, of which only modern humans (Homo sapiens) remain.

Pongo abelii

Sumatran Orangutan

Bukit Lawang, Sumatra, Indonesia

Pongo abelii

Sumatran Orangutan

Bukit Lawang, Sumatra, Indonesia

Pongo abelii

Sumatran Orangutan

Bukit Lawang, Sumatra, Indonesia

Pongo abelii

Sumatran Orangutans (Mother & Child)

Family : Indriidae

The Indriidae are a family of strepsirrhine primates. They are medium- to large-sized lemurs, with only four teeth in the toothcomb instead of the usual six. Indriids, like all lemurs, live exclusively on the island of Madagascar.

Indri Indri

Indri

Andasibe, Madagascar

Indri Indri

Indri

Andasibe, Madagascar

Indri Indri

Indri

Andasibe, Madagascar

Family : Lemuridae

The Indriidae are a family of strepsirrhine primates. They are medium- to large-sized lemurs, with only four teeth in the toothcomb instead of the usual six. Indriids, like all lemurs, live exclusively on the island of Madagascar.

Eulemur fulvus

Brown Lemur

Andasibe, Madagascar

Hapalemur griseus

Grey Bamboo Lemur

Andasibe, Madagascar

Hapalemur griseus

Grey Bamboo Lemur

Andasibe, Madagascar

Family : Pitheciidae

The Pitheciidae are one of the five families of New World monkeys now recognised. The family includes the titis, saki monkeys and uakaris. Most species are native to the Amazon region of Brazil, with some being found from Colombia in the north to Bolivia in the south.

Eulemur fulvus

Uakari

Reserva Nacional Pacaya-Samiria, Peru

Eulemur fulvus

Uakari

Reserva Nacional Pacaya-Samiria, Peru

Family : Tarsiidae

Tarsius spectrumgurskyae

Gursky’s Spectral Tarsier

Sulawesi, Indonesia

Tarsius spectrumgurskyae

Gursky’s Spectral Tarsier

Sulawesi, Indonesia

Tarsius spectrumgurskyae

Gursky’s Spectral Tarsier

Sulawesi, Indonesia

Tarsius spectrumgurskyae

Gursky’s Spectral Tarsier

Sulawesi, Indonesia

Infraclass : Marsupialia

Marsupials are a diverse group of mammals belonging to the infraclass Marsupialia. They are natively found in Australasia, Wallacea, and the Americas. One of marsupials’ unique features is their reproductive strategy: the young are born in a relatively undeveloped state and then nurtured within a pouch on their mother’s abdomen.

Order : Diprotodontia

Diprotodontia (from Greek “two forward teeth”) is the largest extant order of marsupials, with about 155 species, including the kangaroos, wallabies, possums, koala, wombats, and many others.

Family : Phalangeridae

The Phalangeridae are a family of mostly nocturnal marsupials native to Australia, New Guinea, and Eastern Indonesia, including the cuscuses, brushtail possums, and their close relatives.

Ailurops ursinus

Sulawesi bear cuscus

Tangkoko, Sulawesi, Indonesia

Ailurops ursinus

Sulawesi bear cuscus

Tangkoko, Sulawesi, Indonesia