Rat surmulot vs Singe Écureuil

Rattus norvegicus compared with Saimiri sciureus

Taxonomic Classification

Rank	Rat surmulot	Singe Écureuil
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (mammifères)	Mammalia (mammifères)
Order	Rodentia (Rodents)	Primates (Primates)
Family	Muridae (Mice & Rats)	Cebidae
Genus	Rattus	Saimiri
Species	Rattus norvegicus	Saimiri sciureus

Evolutionary Relationship

Rat surmulot and Singe Écureuil share a common ancestor at the Class level: Mammalia. (mammifères)

Conservation Status

Rat surmulot

LC — Least Concern

Singe Écureuil

LC — Least Concern

Physical Characteristics

Attribute	Rat surmulot	Singe Écureuil
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Rat surmulot

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 10 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (11 countries), Asia (15 countries), Europe (41 countries), North America (16 countries), Oceania and the Pacific (10 countries), and South America (10 countries).

Singe Écureuil

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Brazil, Colombia, Japan, and Venezuela.

Rat surmulot

Brown Rat (Rattus norvegicus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Singe Écureuil

<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.

Shared Countries

Both species can be found in 4 countries:

🇧🇷 Brazil 🇨🇴 Colombia 🇯🇵 Japan 🇻🇪 Venezuela