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.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Norway rat | 1 |
| Norway rat (Rattus norvegicus) canonical | 1 |
| Norway rats | 1 |
| Rattus norvegicus | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1772453 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Norway rat (Rattus norvegicus) Context triple: [Rodentia, notableModelOrganism, Norway rat (Rattus norvegicus)]
-
A.
house mouse (Mus musculus)
The house mouse (Mus musculus) is a small, globally distributed rodent that is one of the most important mammalian model organisms in biomedical and genetic research.
-
B.
Rat
Rat is a friendly, boat-loving water vole who serves as one of the central animal protagonists in Kenneth Grahame’s classic children’s novel "The Wind in the Willows."
-
C.
The Rat
"The Rat" is a darkly satirical novel by Günter Grass that blends dystopian fantasy and political allegory to explore themes of human self-destruction and environmental catastrophe.
-
D.
Eastern gray squirrel
The Eastern gray squirrel is a common North American tree squirrel known for its gray fur, bushy tail, and adaptability to both forests and urban environments.
-
E.
Rabbit
Rabbit is a famous stainless-steel sculpture by Jeff Koons, celebrated as an iconic work of contemporary pop and conceptual art.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Norway rat (Rattus norvegicus) Target entity description: 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.
-
A.
house mouse (Mus musculus)
The house mouse (Mus musculus) is a small, globally distributed rodent that is one of the most important mammalian model organisms in biomedical and genetic research.
-
B.
Rat
Rat is a friendly, boat-loving water vole who serves as one of the central animal protagonists in Kenneth Grahame’s classic children’s novel "The Wind in the Willows."
-
C.
The Rat
"The Rat" is a darkly satirical novel by Günter Grass that blends dystopian fantasy and political allegory to explore themes of human self-destruction and environmental catastrophe.
-
D.
Eastern gray squirrel
The Eastern gray squirrel is a common North American tree squirrel known for its gray fur, bushy tail, and adaptability to both forests and urban environments.
-
E.
Rabbit
Rabbit is a famous stainless-steel sculpture by Jeff Koons, celebrated as an iconic work of contemporary pop and conceptual art.
- F. None of above. chosen
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 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Norway rat (Rattus norvegicus) Description of subject: 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.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
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
this entity surface form:
Norway rats