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 ?
We thank Christine Manson and David Reveille for sampling brown rats.
Key words: Brown Rat, Oregon, predation, Rattus norvegicus, Tamias townsendii, Townsend's Chipmunk
THE brown rat is one of the most common types of the rodent.
For their study, the researchers studied samples taken from 58 rodents, including 53 brown rats, 2 mice (Mus musculus) and 3 black rats (Rattus rattus).
For example, the spread of the bubonic plague in Guayaquil did not stop, as is still believed, because of the health policies instituted, but because of the increase of the black rat population relative to that of brown rats, which were carriers of the disease.
SEOV-positive rodents were all brown rats from residential areas, and HTNV-positive rodents were all striped field mice from field areas.
Animals concernedRodentmouse, mice , brown rats , voles, black rats , muskrats , Pest ( crawling insects )cockroaches, fleas , ants, silverfish , bed bugs, armyworms .
Prevalence and transmission of Toxoplasma gondii in wild brown rats, Rattus norvegicus.
In British Columbia and Alaska, their distribution is coastal and there are few records of Brown Rats from the interior of western Canada (Banfield 1974; Nagorsen 2005) or Alaska (Fritts 2007; MacDonald and Cook 2009).
As part of its National Rodent Survey Report 2007, (NPTA) asked all councils for figures of how many reports they had received of brown rats and mice.
Yes, I know grey squirrels are such pretty furry little things, but then so are the reds and they belong in England; grey squirrels and brown rats do not.
Steve alsomade the gruesome discovery of 96 dead common toads in Tarbock, the unfortunate amphibians had been gutted, but their heads were intact - probably the work of brown rats, which are smart enough to avoid the unpalatable part of the toad (not that I've ever tried eating one).