brown rat

Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

brown rat

The common domestic rat (Rattus norvegicus), which is found worldwide and is a destructive pest of crops and stored food and a carrier of disease. Also called Norway rat.


small, furred mammal; members of the family Murinae (Old World rats) and the family Cricetinae (New World rats) both of the order Rodentia. They are omnivorous, nocturnal, do not hibernate and live commensally with humans. They have pointed snouts, a long, thin, almost hairless tail. Only some of the members of the rat and allied groups are listed below.

rat bite fever
black rat
Old World rat with long tail and ears. Called also Rattus rattus.
brown rat
Old World rat with short tail and ears. Called also Rattus norvegicus.
rat flea
kangaroo rat
a solitary rodent with long legs with which it progresses in leaps like a kangaroo and uses its large tail as a balancer. Called also Dipodomys deserti.
rat leprosy
a chronic, largely cutaneous disease of rats caused by Mycobacterium lepraemurium and characterized by subcutaneous granuloma and similar involvement of superficial lymph nodes, containing large numbers of acid-fast organisms. The disease has little similarity to nor any relationship with human leprosy. See also feline leprosy.
Long-Evans rat
laboratory rat with brown or black head and shoulders.
musk rat
properly called muskrat and is really a water vole. Called also Ondatra zibethica.
pack rat
New World rat-like creature. Called also Neotoma spp., wood rat.
sand rat
see gerbil.
Sprague-Dawley rat
albino laboratory rat.
rat tooth, teeth
describes the type of points on surgical instruments with a single point on one side which interlocks with two points on the other side.
water rat
properly called water vole; in Australia, water rat is a native rodent Hydromys chrysogaster.
white rat
common laboratory rat.
Wistar rat
a white laboratory rat.
References in periodicals archive ?
We thank Christine Manson and David Reveille for sampling brown rats.
Certainly the Brown Rat is known to attack and consume a multitude of animal species, including mice (O'Boyle 1974), limpets and crabs (Navarrete and Castilla 1993), fish (Cottam 1948), freshwater bivalves and gastropods (Parisi and Gandolfi 1974), birds of all life stages (Barrett-Hamilton 1913; Major and others 2007), turtles (Draud and others 2004), lizards (Bettesworth and Anderson 1972), and so on (additional prey items are picturesquely listed by Barrett-Hamilton 1913).
The maximum life span for a brown rat is up to three years, but one is more common.
Washington, November 24 (ANI): A new study suggests that brown rats, the biggest and most common rats in Europe, may be carrying the bacteria that can cause serious heart disease in humans.
The Norway rat or brown rat (Rattus norvegicus) is a case in point.
As a result, the Star Ledger reported: "The Senate yesterday passed a bill that would expand the list of activities exempted from the [law] to include the killing or disposal of a Norway brown rat, black rat, and house mouse.
In residential areas, the brown rat (Rattus norvegicus) was the predominant rodent species and had the highest infection rate (5.
I have seen an increase in rattus norvegicus, know as the Norway rat or brown rat.
The Brown Rat (Rattus norvegicus) is an Old World rodent that is native to central Asia, but through inadvertent human transport has colonized every continent except Antarctica (Silver 1927).
So when I got home there was one nasty brown rat in the garden and three cute desert rats in the house.
It is also an indigenous species which has been here for thousands of years, unlike the brown rat, which is an immigrant that arrived in the 18th century due to human agency.