Norway rat (Rattus norvegicus)

E201664

The Norway rat (Rattus norvegicus) is a widely distributed, medium-sized rodent that serves as a major biomedical model organism and a common commensal pest species associated with human environments.

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All labels observed (4)

Label Occurrences
Norway rat 1
Norway rat (Rattus norvegicus) canonical 1
Norway rats 1

Statements (90)

Predicate Object
instanceOf commensal pest
mammal
model organism
rodent
vertebrate
activityPattern primarily nocturnal
adultWeight approximately 200 to 500 g
associationWithHumans commensal
behavioralTrait neophobic toward novel objects
bodyLength approximately 20 to 25 cm
chromosomeNumber 42
class Mammalia
climbingAbility good climber
commonName Norway rat
brown rat
sewer rat
controlMethod habitat modification
rodenticides
trapping
damageType food contamination
structural damage
derivedFrom Norway rat
diet omnivorous
diseaseVectorFor Leptospira interrogans
Salmonella spp.
rat-bite fever pathogens
distribution cosmopolitan
domesticatedForm laboratory rat
family Muridae
Muridae
firstDescribedBy John Berkenhout
firstScientificDescriptionYear 1769
furColor brown
grey-brown
genomeSequenced true
genus Rattus
gestationPeriod about 21 to 23 days
hearingAbility sensitive to ultrasound
introducedRange Africa
Australia
Europe
New Zealand
North America
South America
many oceanic islands
IUCNStatus Least Concern
kingdom Animalia
lifespanInCaptivity up to 3 to 4 years or more
lifespanInWild about 1 to 2 years
litterSize about 6 to 12 young
locomotion terrestrial
modelForDisease cancer
diabetes
hypertension
neurological disorders
nativeRange Mongolia
Siberia
North China
surface form: northern China
nestingBehavior burrow-dwelling
order Rodentia
parasiteHostFor fleas
mites
ticks
pestStatus agricultural pest
urban pest
phylum Chordata
populationTrend increasing in many urban areas
primaryUseInResearch behavioral studies
biomedical research
neuroscience
pharmacology
toxicology
relevanceToHumans important pest species
major laboratory animal
reproductionType viviparous
reproductiveStrategy high reproductive rate
scientificName Norway rat (Rattus norvegicus) self-linksurface differs
surface form: Rattus norvegicus
sensoryCommunication ultrasonic vocalizations
sexualMaturityAge about 5 to 8 weeks
smellAbility highly developed sense of smell
socialStructure highly social
swimmingAbility good swimmer
tailCharacteristic scaly
tailLength approximately 17 to 23 cm
taxonRank species
typicalHabitat buildings
farms
sewers
urban areas
visionCharacteristic poor visual acuity

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Rodentia notableModelOrganism Norway rat (Rattus norvegicus)
North American mammals includesIntroducedSpecies Norway rat (Rattus norvegicus)
this entity surface form: Norway rat
Norway rat (Rattus norvegicus) scientificName Norway rat (Rattus norvegicus) self-linksurface differs
subject surface form: Norway rat
this entity surface form: Rattus norvegicus
Pinzón Island invasiveSpeciesEradicated Norway rat (Rattus norvegicus)
this entity surface form: Norway rats