brown rat

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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 ?
Increasing of Toxoplasma gondii (Coccidia, Sarcocystidae) infections by Trypanosoma lewisi (Kinetoplastida, Trypanosomatidae) in white rats.
The White Rat was on the wall of the derelict White House pub, in Berry Street, for many years, but removed in 2013 so the building could be restored.
RAT RUN: Above, Martini the white rat holds the pupils' attention
Exploration of the cytotoxic effects of an insecticide, lambda cyhalothrine, on sexual exocrine function in the white rat," Commun.
It includes dissection of the cat, white rat, and selected mammalian organs; physiological experiments; emphasis on the study of anatomy through histology; terms accompanying drawings and photos; phonetic pronunciations; diagrams of lab equipment; lab report questions; and emphasis on lab safety.
QI recently got a white rat called Maggie but I'm worried she is bored in her cage while I'm at work all day.
I'm not saying it was a white rat, mind you, but just lighter.
The role of orientation and defensive components of white rat behavior in Open Field conditions).
95) tells of a strange Underland under New York City: once Gregor discovers it, he swears he won't return to New York--until a prophecy requires him to reunite with his bat, a rebellious princess and others in search of the dangeous white rat known as the Bane.
05), and this suggests an important role of other mechanisms or cells in the white rat natural resistance to this parasite.
He ignored his fellow tenants - preferring his pet white rat for company instead.
I see now that my callous attitude to rodents, like the grey squirrel, can be traced back to avid consumption in childhood of stories like William the Showman in which our ragamuffin hero paints a white rat in alternate shades of blue and pink.