Orange Monkeys

Andean Night Monkey

Species Name: Aotus miconax

Andean night monkeys are a genus Aotus, commonly known as nocturnal monkeys or the Peruvian night monkey. Species in this genus are the only truly nocturnal monkeys in the world. Andean night monkeys are not sexually dimorphic as males and females look very similar.

Andean Saddle-back Tamarin

Species Name: Leontocebus leucogenys

The Andean saddle tamarin, also known as the saddleback tamarin (formerly known as the brown-mantled tamarin), is a New World monkey species. Andean saddleback monkeys are considered "phyletic dwarfs," meaning their small size is related to their evolutionary development.

Atlantic Titi

Species Name: Callicebus personatus

The Atlantic titi, also known as the masked titi, inhabits the rainforests of the Atlantic coast of Brazil east of the Andes in the states of Bahia, Espírito Santo, northwest of Minas Gerais, north of Rio de Janeiro, and São Paulo. This species, found nowhere else in the world, inhabit the tropical forests of Brazil's Atlantic coast east of the Andes.

Azara’s Night Monkey

Species Name: Aotus azarae

Azara's night monkeys, also known as southern night monkeys and Azara's owl monkeys, are native to the Gran Chaco region of South America, a vast area with many different ecosystems, from savannas to grasslands to dry spiny forests and gallery forests. Genetic testing has shown that the males of this species mated pairs are the fathers of the babies they care for.

Bald Uakari

Species Name: Cacajao calvus

The obscure Bald Uakari (Cacajao Calvus) is an acrobatic Amazonian monkey with a flaming red face uniquely adapted to periodically flooded forests. Surprising insights on its taxonomy, specialized seed-based diet, unusual social life, habitat flexibility, and urgent need to conserve diminishing flooded forest habitat across the Amazon Basin.

Bare-eared Squirrel Monkey

Species Name: Saimiri ustus

The bare-eared squirrel monkey also called the golden-backed squirrel monkey, is a subspecies of the Saimiri sciureus group native to the tropical forests and jungles of South and Central America. The bare-eared squirrel monkey differs from other species because it does not have ear tufts.

Bearded Saki

Species Name: Chiropotes chiropotes

The bearded sakis or cuxiús are five species of New World monkeys classified in the genus Chiropotes. Bearded saki shows slight sexual dimorphism: males are usually taller and have longer, more prominent beards than females.

Black-faced Lion Tamarin

Species Name: Leontopithecus caissara

The black-faced lion tamarin, also known as superagüi lion tamarin, is a small New-World primate in the Callitrichidae family. Black-faced lion tamarins are diurnal and seek refuge in hollows or tree holes at night.

Bolivian Red Howler

Species Name: Alouatta sara

The Bolivian red howler monkey is a New-World monkey species native to neotropical South America. The Bolivian red howlers live in groups of 1 to 3 males and 2 to 7 females. Males in bachelor groups try to dominate the female group by wrestling the lead male.

Brown Howler Monkey

Species Name: Alouatta guariba

The brown howler monkey, also called the brown howler monkey, is a species of New World monkey that lives in the forests of southeastern Brazil and northeastern Argentina. Despite the common name "brown howler", its color is remarkably variable, with some individuals mainly appearing black or reddish-orange.

Brown-mantled Tamarin

Species Name: Leontocebus fuscicollis

The brown-mantled tamarin also called the Spix's saddleback tamarin, is a species of saddleback tamarin native to South America. The species are considered "phyletic dwarfs," meaning their small size is linked to their evolutionary development.

Cruz Lima’s Saddleback Tamarin

Species Name: Leontocebus cruzlimai

The Cruz Lima saddleback tamarin is a species of saddleback tamarin, a small monkey native to South America. The Cruz Lima saddleback tamarins were formerly thought to be a subspecies of the brown-mantled tamarin (Leontocebus fuscicollis).

East Javan Langur

Species Name: Trachypithecus auratus

The East Javan langur, also called the Javan lutung, Javan langur, or ebony langur is an Old-World primate in the subfamily Colobinae. As with all langurs, the East Javan langur is a social animal, living in groups of about 7 individuals, with 1 or 2 adult males in the group.

Eastern Pygmy Marmoset

Species Name: Cebuella niveiventris

The eastern pygmy marmoset is a species of marmoset, a tiny New World monkey found in the southwestern Amazon rainforest. Notably, at just over 100 grams (3.5 ounces), the eastern pygmy marmoset is the smallest monkey and among the smallest primates in the world.

Ecuadorian Squirrel Monkey

Species Name: Saimiri macrodon

The Ecuadorian squirrel monkey is a species of the squirrel monkey. Although it occasionally ventures to the ground to play or feed, the Ecuadorian squirrel monkey is strictly an arboreal primate.

Gee’s Golden Langur

Species Name: Trachypithecus geei

Gee's golden langur, also known simply as the golden langur, is an Old-World primate found in a small area of western Assam, India, and in the nearby foothills of the Black Mountains of Bhutan. Gee's golden langur was officially discovered in 1953 by Edward Pritchard Gee, an amateur naturalist and tea planter in Assam, India.

Geoffroy’s Saddleback Tamarin

Species Name: Leontocebus nigrifrons

Geoffroy's Saddleback Tamarin is a saddled tamarin, a species of small monkey native to South America. Geoffroy's saddleback tamarins often associate and form mixed groups with mustached tamarins (Saguinus mystax). Both species often perch in the same tree, responding to each other's alarm calls.

Gold-And-White Marmoset

Species Name: Mico chrysoleucos

The gold-and-white marmoset, also called the golden-white tassel-ear marmoset, is a species of marmoset, a tiny monkey native to the Amazon rainforest in the eastern Amazonas state of Brazil.

Golden Lion Tamarin

Species Name: Leontopithecus rosalia

The golden lion tamarin (Leontopithecus rosalia), also called the golden tamarin, is a small New World primate in the Callitrichidae family. The golden lion tamarin derives its name from its vivid reddish-orange coat and extra-long hair around its face and ears, giving it a distinctive mane.

Golden Snub-Nosed Monkey

Species Name: Rhinopithecus roxellana

The golden snub-nosed monkey (Rhinopithecus roxellana) is an Old World monkey of the subfamily Colobinae. Golden snub-nosed monkeys are highly social animals that exhibit group behaviors known as fission and fusion.

Golden-Headed Lion Tamarin

Species Name: Leontopithecus chrysomelas

The golden-headed lion tamarin (Leontopithecus chrysomelas), also known as the golden-headed tamarin, is a lion tamarin native to Brazil. It is only found in fragments of lowland and premontane forests in the state of Bahia and is therefore considered an endangered species.

Guianan Squirrel Monkey

Species Name: Saimiri sciureus

The Guianan squirrel monkey, also called the South American squirrel monkey, is a squirrel monkey found in Guiana, Brazil, and Venezuela. Saimiri sciureus was once thought to belong to the Collins' squirrel monkey and the Humboldt's squirrel monkey. Still, genetic research in 2009 and 2015 showed they were different species.

Humboldt’s Night Monkey

Species Name: Aotus trivirgatus

The three-striped night monkey (Aotus trivirgatus), also known as the northern owl monkey, Humboldt's Night Monkey, or northern night monkey, is one of several currently recognized species of owl monkeys.

Humboldt’s Squirrel Monkey

Species Name: Saimiri cassiquiarensis

Humboldt's squirrel monkey (Saimiri cassiquiarensis) is a species of squirrel monkey found in South America's tropical rainforests, except for the coastal forests of southeastern Brazil.

Lang’s Red Colobus

Species Name: Piliocolobus langi

Lang's red colobus (Piliocolobus langi) is another species of red colobus monkey. Historically, it was treated as a subspecies of the Central African red colobus (Piliocolobus foai). Still, more recent taxonomies generally treat it as a distinct species.

Madidi Titi

Species Name: Plecturocebus aureipalatii

The Madidi titi also called the Golden Palace monkey, is a titi, a New World species of monkey discovered in 2004 in Madidi National Park in western Bolivia. The species got its name, Golden Palace, from an online casino after an auction.

Neblina Uakari

Species Name: Cacajao hosomi

The Neblina uakari (Cacajao hosomi), black-headed uakari, is a recently described monkey species from the extreme northwest of the Brazilian Amazon and adjacent southern Venezuela. Neblina uakari's English name refers to the Pico da Neblina, which marks its known distribution approximate center.

Niger Delta Red Colobus

Species Name: Piliocolobus epieni

The Niger Delta red colobus (Piliocolobus epieni) is a critically endangered colobus native to the western part of the Niger Delta in southern Nigeria. The scientific name of the Niger Delta red colobus, Piliocolobus epieni, comes from the local Ijaw language word for the species, "epieni".

Ollala Brothers’ Titi

Species Name: Plecturocebus olallae

The Ollala Brothers' titi (Plecturocebus olallae) is a marmoset species of New World monkeys native to Bolivia. Like all Neotropical primates (except Aotus), the Ollala brothers' titi monkeys are highly diurnal.

Pennant’s Red Colobus

Species Name: Piliocolobus pennantii

Pennant's Colobus or Pennant's Red Colobus (Piliocolobus pennantii) is a species of arboreal primate in the Cercopithecidae family. Like other red colobus monkeys, the Pennant's red colobus lives in flocks that may consist of 12 to 80 individuals occupying a territory of 25 to 150 hectares.

Pissinatti’s Bald-faced Saki

Species Name: Pithecia pissinattii

Pissinatti's Sakior or Pissinatti's bald-faced saki (Pithecia pissinattii), is a controversial species of saki monkey, a New World monkey. This species is named after Alcides Pissinatti, a Brazilian veterinarian who pioneered the breeding of endangered Brazilian primates.

Red-mantled Saddle-Back Tamarin

Species Name: Leontocebus lagonotus

The Red-mantled saddleback tamarin (Leontocebus lagonotus) is a species of saddleback tamarin, a species of small South American monkey. The Red-mantled saddle-back tamarin lives in Peru and Ecuador, and its type locality is in Peru, near the confluence of the Amazon and Napo.

Rio Beni Titi

Species Name: Plecturocebus modestus

The Rio Beni tití is a New World monkey species belonging to the genus Callicebus of the family Pitheciidae. It is native to Bolivia and is found mainly in the eastern parts of Bolivia in the upper basins of the Mamoré and Grande rivers.

Rio Mayo Titi

Species Name: Plecturocebus oenanthe

The Río Mayo titi (Plecturocebus oenanthe), also known as the San Martín titi, is native to the San Martín region of Peru and is considered Peru's most endangered primate. Río Mayo titis have been described as somewhat temperamental and hesitant and don't tend to be inquisitive.

Schmidt’s Red-tailed Monkey

Species Name: Cercopithecus ascanius

The Schmidt's red-tailed monkey, also called the red-tailed guenon, Schmidt's guenon, or black-cheeked white-nosed monkey is a primate species in the Cercopithecidae family. The Schmidt's red-tailed monkey is named for its red coloration on the underside of its tail, as well as the bicolor coloration of its tail as the reddish color increases from the base to the tip.

Southern Patas Monkey

Species Name: Erythrocebus baumstarki

The Southern Patas Monkey (Erythrocebus baumstarki), native to Tanzania, is a critically endangered primate known for its speed, elusive nature, and striking coloration. Once widespread, its population now teeters between 100–200 individuals due to habitat loss and human threats. Inhabiting open acacia woodlands, these ground-dwelling monkeys play a vital ecological role in seed dispersal and insect control. Conservation efforts are urgently needed to protect this rare species and restore its shrinking habitat range.

Toque Macaque

Species Name: Macaca sinica

The toque macaque (Macaca sinica) is a red-brown Old World monkey endemic to Sri Lanka, known as the rilewa or rilawa. Its common name refers to the strand of hair on its head that resembles a brimless hat.

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