North American river otter
E529587
The North American river otter is a semi-aquatic mustelid known for its playful behavior, streamlined body, and adaptation to rivers, lakes, and coastal waterways across much of North America.
All labels observed (2)
| Label | Occurrences |
|---|---|
| North American river otter canonical | 2 |
| River Otter | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5516229 — 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: North American river otter Context triple: [North American mammals, includesSpecies, North American river otter]
-
A.
Otter
Otter is a friendly, good-natured river-dwelling animal character in Kenneth Grahame’s classic children’s novel "The Wind in the Willows," known for his devotion to his family and his easy camaraderie with the other riverbank creatures.
-
B.
Beaver
Beaver was one of the British ships in Boston Harbor whose tea cargo was destroyed during the Boston Tea Party protest in 1773.
-
C.
Beaver
Beaver is a small borough in western Pennsylvania that serves as the administrative and commercial center of Beaver County.
-
D.
Beaver
Beaver is a large, semiaquatic rodent known for building dams and lodges in freshwater habitats across North America and parts of Europe.
-
E.
Beaver
Beaver is a small unincorporated community and census-designated place in Raleigh County, West Virginia, known for its residential character and proximity to the city of Beckley.
- 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: North American river otter Target entity description: The North American river otter is a semi-aquatic mustelid known for its playful behavior, streamlined body, and adaptation to rivers, lakes, and coastal waterways across much of North America.
-
A.
Otter
Otter is a friendly, good-natured river-dwelling animal character in Kenneth Grahame’s classic children’s novel "The Wind in the Willows," known for his devotion to his family and his easy camaraderie with the other riverbank creatures.
-
B.
Beaver
Beaver was one of the British ships in Boston Harbor whose tea cargo was destroyed during the Boston Tea Party protest in 1773.
-
C.
Beaver
Beaver is a small borough in western Pennsylvania that serves as the administrative and commercial center of Beaver County.
-
D.
Beaver
Beaver is a large, semiaquatic rodent known for building dams and lodges in freshwater habitats across North America and parts of Europe.
-
E.
Beaver
Beaver is a small unincorporated community and census-designated place in Raleigh County, West Virginia, known for its residential character and proximity to the city of Beckley.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
mammal
ⓘ
mustelid ⓘ species ⓘ |
| activityPattern | mostly nocturnal ⓘ |
| adaptation |
dense water-repellent fur
ⓘ
muscular tail for propulsion ⓘ webbed feet for swimming ⓘ |
| averageLitterSize | 1 to 5 pups ⓘ |
| binomialName | Lontra canadensis NERFINISHED ⓘ |
| bodyShape | streamlined body ⓘ |
| class | Mammalia ⓘ |
| commonName |
North American river otter
ⓘ
Northern river otter ⓘ river otter ⓘ |
| conservationStatus | Least Concern ⓘ |
| conservationStatusSystem | IUCN Red List NERFINISHED ⓘ |
| diet |
amphibians
ⓘ
birds ⓘ crustaceans ⓘ fish ⓘ small mammals ⓘ |
| ecologicalRole |
aquatic predator
ⓘ
indicator species for aquatic ecosystem health ⓘ |
| family | Mustelidae NERFINISHED ⓘ |
| genus | Lontra ⓘ |
| habitat |
coastal shorelines
ⓘ
estuaries ⓘ lakes ⓘ rivers ⓘ wetlands ⓘ |
| kingdom | Animalia ⓘ |
| lifespanInCaptivity | up to about 20 years ⓘ |
| lifespanInWild | 8 to 9 years ⓘ |
| lifestyle | semi-aquatic ⓘ |
| nativeTo |
Canada
NERFINISHED
ⓘ
North America ⓘ United States NERFINISHED ⓘ parts of Mexico ⓘ |
| notableBehavior | playful behavior ⓘ |
| order | Carnivora ⓘ |
| phylum | Chordata ⓘ |
| primarySense |
good vision in water
ⓘ
sensitive whiskers for detecting prey ⓘ well-developed sense of smell ⓘ |
| reproduction | delayed implantation ⓘ |
| socialBehavior | often lives in family groups ⓘ |
| taxonRank | species ⓘ |
| threats |
habitat loss
ⓘ
trapping for fur ⓘ water pollution ⓘ |
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: North American river otter Description of subject: The North American river otter is a semi-aquatic mustelid known for its playful behavior, streamlined body, and adaptation to rivers, lakes, and coastal waterways across much of North America.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
River Otter