Norway rat

Common sewer dweller

The Norway rat is the common brown rat found worldwide, typically gray-brown with a lighter belly, larger than the black rat it has largely displaced.

Despite the name, it likely originated in Asia, not Norway.

It thrives near human settlements, living in sewers, basements, and garbage areas: The city launched a campaign against Norway rats in the subway system.

pest

infestation

Pest takeover situation

poison · bait · trap · nuisance · scavenger · filth · sanitation · public health · hantavirus · leptospirosis

rodent

whiskers

Facial sensory hairs

fur · burrow · nocturnal · omnivore · scurry · paws · foraging · nesting · teeth · mammal

invasive

ecosystem

Interconnected organisms and surroundings

biodiversity · introduction · spread · competition · habitat destruction · ecological impact · eradication · biosecurity · proliferation · stowaway

adaptability

resilience

Capacity to recover quickly

hardiness · robustness · commensal · opportunistic · generalist · survival · tolerance · neophobia · intelligence · learning

Opposites
wild/pest vs. domesticated status

Norway ratfancy rat

Selectively bred domestic rodent

pet rat · laboratory rat · white rat · pet mouse · fancy mouse

invasive pest vs. native/beneficial fauna

Norway ratnative species

Organisms originating in a region

endemic species · beneficial insect · pollinator · keystone species · endangered species

vermin vs. valued animals

Norway ratcompanion animal

Domesticated animal kept for company

pet · domestic cat · house cat · livestock · service animal

Family

rat, rats, ratty, Norway, Norwegian, Norwegians

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Rated G