Assam Macaque vs Macaco-de-cheiro

Macaca assamensis compared with Saimiri sciureus

Key Differences

• Assam Macaque is Near Threatened while Macaco-de-cheiro is Least Concern.

Taxonomic Classification

Rank	Assam Macaque	Macaco-de-cheiro
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order same	Primates (primatas)	Primates (primatas)
Family	Cercopithecidae (Old World Monkeys)	Cebidae
Genus	Macaca	Saimiri
Species	Macaca assamensis	Saimiri sciureus

Evolutionary Relationship

Assam Macaque and Macaco-de-cheiro share a common ancestor at the Order level: Primates. (primatas)

Conservation Status

Assam Macaque

NT — Near Threatened

Macaco-de-cheiro

LC — Least Concern

Physical Characteristics

Attribute	Assam Macaque	Macaco-de-cheiro
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Assam Macaque

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Macaco-de-cheiro

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Brazil, Colombia, Japan, and Venezuela.

Assam Macaque

The Assam Macaque (Macaca assamensis) is a species in the genus Macaca. It is currently classified as Near Threatened on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Macaco-de-cheiro

<em>Saimiri sciureus</em>, commonly known as the common squirrel monkey, is a small New World monkey in the family Cebidae, widely distributed across the tropical forests of South America. This species typically inhabits lowland tropical rainforests, riverine forests, secondary forests, and forest edges from sea level to approximately 2,000 metres elevation, showing a preference for lower forest strata and forest margins. Its geographic range spans the Amazon Basin, extending through Brazil, Peru, Colombia, Venezuela, Guyana, Bolivia, and adjacent countries. Classified as Least Concern on the IUCN Red List, <em>Saimiri sciureus</em> is among the most abundant primates across much of Amazonia, though local populations face pressures from deforestation and the pet trade. The species is highly social, typically forming troops of 10–75 individuals that forage actively during daylight hours. It is omnivorous, typically feeding on insects, fruit, nectar, small vertebrates, and bird eggs, with insects comprising a major proportion of the diet. Adults typically reach a body length of approximately 25–37 cm with a tail length of 37–47 cm, and body weight typically ranges from approximately 600–1,100 g. Average lifespan in the wild is typically around 15–20 years.