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Azara's night monkey

Azara's night monkey
Aotus azarae infulatus.jpg
Azara's night monkey (A. a. infulatus) at Cristalino Jungle Lodge, Mato Grosso, Brazil
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Family: Aotidae
Genus: Aotus
Species: A. azarae
Binomial name
Aotus azarae
(Humboldt, 1811)
Azara's Night Monkey area.png
Azara's Night Monkey range

Azara's night monkey (Aotus azarae), also known as the southern night monkey, is a night monkey species from South America. It is found in Argentina, Bolivia, Brazil, Peru and Paraguay. The species is monogamous, with the males providing a large amount of parental care. It is named after Spanish naturalist Félix de Azara. Although primarily nocturnal, some populations of Azara's night monkey are unique among night monkeys in being active both day and night. The species is listed as Least Concern on the IUCN Red List.

There are three subspecies of Azara's night monkey.

Due to a lack of data body size and weight measurements of Azara's night monkey have been estimated from a small number of wild samples. The average head and body length of the female is 341 mm (13.4 in) while the male is 346 mm (13.6 in). The average weight is 1,254 g (2.765 lb) for male A. a. azarae, 1,246 g (2.747 lb) for female A. a. azarae, 1,180 g (2.60 lb) for male A. a. boliviensis, and 1,230 g (2.71 lb) for female A. a. boliviensis. Its gestation period is about 133 days. The lifespan for Azara's night monkey is unknown, but the captive life span for members of the genus Aotus is believed to be 20 years.

Azara's night monkey is a monogamous species, with the male remaining present to raise the offspring and provide food. The offspring will only stay with its family until two to three years of age and then will disperse to begin a family of its own. There is very little sexual dimorphism in this species.

Azara's night monkey is primarily a frugivore, but also will eat things such as leaves, flowers, and insects. One of the main advantages of being a nocturnal animal is that there is greatly reduced competition from diurnal animals.


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