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,...

meaning "earless". Night monkeys are the only truly nocturnal monkeys with the exception of some cathemeral populations of Azara's night monkey, who have irregular...

three-striped night monkey (Aotus trivirgatus), also known as northern night monkey or northern owl monkey, is one of several species of owl monkeys currently...

gray-bellied night monkey (Aotus lemurinus), also called the grey-legged douroucouli or lemurine owl monkey, is a small New World monkey of the family...

night monkey or Chocoan night monkey (Aotus zonalis) is a species of night monkey formerly considered a subspecies of the gray-bellied night monkey of...

The Peruvian night monkey (Aotus miconax), also known as the Andean night monkey, is a nocturnal New World monkey endemic to northern Peru. Adults weigh...

Spix's night monkey (Aotus vociferans), also known as the Colombian gray night monkey, noisy night monkey and Spix's owl monkey, is a night monkey species...

Brumback's night monkey (Aotus brumbacki) is a species of night monkey found in Colombia. It has traditionally been considered a subspecies of gray-bellied...

Nancy Ma's night monkey (Aotus nancymaae) is a night monkey species from South America. It is found in Brazil and Peru. The species is named after Dr....

Hernández-Camacho's night monkey (Aotus jorgehernandezi) is a species of night monkey of the family Aotidae. It was first described in 2007 by Thomas...