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Topic: Brown Rat

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In the News (Wed 19 Jun 19)

  Brown Rat
The Brown Rat (Rattus norvegicus) is one of the most well-known and common rats, and also one of the largest.
Traditionally the dominant rodent of Europe and thought to have originated in northern China, the Brown Rat has spread to all continents, and is a common pest wherever humans live, particularly in urban areas and degraded environments.
Brown Rats carry a number of diseases, including bubonic plague, Weil's disease[?], cryptosporidiosis[?], haemorrhagic fever[?] (often HFRS[?]), Q fever and hantavirus pulmonary syndrome[?].
www.ebroadcast.com.au /lookup/encyclopedia/br/Brown_rat.html   (385 words)

 Brown Rat - Picture - MSN Encarta
The brown rat belongs to the family Muridae, along with the common vole, Arctic lemming, and golden hamster.
The brown rat, also called the common and Norway rat, readily adapts to new surroundings.
Rats transmit a variety of diseases, among them Pasteurella pestis, which was responsible for the Great Plague in London (1664-1665).
encarta.msn.com /media_461517617_761559338_-1_1/Brown_Rat.html   (53 words)

 [No title]
Rats are occasionally kept as pets and still for fancy, but the vast majority of domestic rats are obtained from laboratory animal breeders for use in biomedical research, testing, and education.
A rat can be lifted by the base of the tail, but this technique should be employed for only short periods, such as to move a rat from one enclosure to another.
The rat responds to decreases in ambient temperature by nonshivering thermogenesis, and to increases in ambient temperature by increasing the vascularization of its long tail, which may serve as a thermoregulatory organ.
www.lvma.org /rat.html   (1071 words)

 Scary Animals - Brown Rat
The Brown Rat or Norway Rat (Rattus norvegicus) is one of the best-known and common rats, and also one of the largest.
Rats weighing over a kilogram are exceptional, and stories of rats as big as cats are exaggerations, or misidentifications of other rodents such as the Coypu and Muskrat.
Brown Rats in cities tend not to wander extensively, often staying within 20 meters (65 ft) of their nest if a suitable concentrated food supply is available, but they will range more widely where food availability is lower.
www.sheppardsoftware.com /animalpages/animal-dangerous-4.htm   (865 words)

 IPM : Home, Yard & Garden : Brown Rat Management
The common brown rat (Rattus norvegicus -- also called the Norway rat or sewer rat) is a destructive animal pest found in and around towns and farms.
Rats have litters of 6 to 12 young, which are born 21 to 23 days after mating.
Rats frequently live beneath a doghouse and soon learn they can feed on the dog's food when he is absent or asleep.
www.ipm.uiuc.edu /hyg/pests/brown_rat   (1309 words)

 Brown Rat
The brown rat is to be found in most parts of the world but is believed to have originated in eastern Asia, from whence it spread partially on foot, and partially by ship.
Brown rats live in small groups whose members are probably all descended from one female.
This is because rats have a sense which tells them exactly where they are, a bit like you going into your dark bedroom and turning on the light, you know just where the switch is. This sense is more developed in rodents and if startled, they know exactly where their line of escape lies.
www.the-piedpiper.co.uk /th1a.htm   (865 words)

 World Almanac for Kids
RAT, common name for any large rodent of the family Muridae, smaller members of which are known as mice.
The brown rat, Rattus norvegicus, which is also known as the Norway rat, house rat, gray rat, barn rat, and wharf rat, is the larger of the two.
Albino strains of both the fl and brown rat are bred for use in biological study; these white rats have been extensively used for nutritional studies, and their use has helped scientists discover many essential dietary components and better understand the growth process.
www.worldalmanacforkids.com /explore/animals/rat.html   (647 words)

 rat — FactMonster.com
The fl rat was common in Europe in the Middle Ages and was responsible for the spreading of plague.
The laboratory white rat is an albino strain of the brown rat.
A good climber, the fl rat inhabits attics and upper floors in warm areas; it is the common rat of the Mediterranean region, the SE United States, and Central and South America.
www.factmonster.com /ce6/sci/A0841186.html   (435 words)

 BBC - Science & Nature - Wildfacts - Brown rat, Norway rat, common rat
Brown rats are highly adaptable and can be found in a variety of habitats, typically near human habituation.
Brown rats are omnivorous but prefer starch and protein-rich foods, such as cereals.
Brown rats swim well and are sometimes mistaken for water voles.
www.bbc.co.uk /nature/wildfacts/factfiles/273.shtml   (365 words)

 Rat's Page
The brown rat is also known as the barn rat, Norway rat, sewer rat, and the wharf rat.
The Brown Rat is larger then the fl rat (head and body length= seven to ten inches), and the tail is shorter then its length.
Domesticated rats will rarely bite, unless they are frightened, suprised, you're violating their spacce (females are very protective to their litter- + litter's space), are being handled roughly or are being abused.
www.angelfire.com /mn/pugget/rats.html   (673 words)

 Brown rat, Norway rat
Rats are very adaptable and quick to learn and so will exploit any food source, especially where we leave food where they can easily get at it.
On its nightly patrol a brown rat will venture out along a series of regular runways, perhaps up to 50 m from its nest, but will range up to 5 km for example, to reach fields at harvest time where spilt grain may be available.
When food is scarce, rats at the bottom of the heap may be forced to feed during the day time, which is often the only time we become aware that we are sharing our homes and gardens with these animals.
www.bristolzoo.org.uk /learning/animals/mammals/brown-rat   (395 words)

 Fareham Borough Council: Brown Rat
Brown rats are between 19-28 cm in length plus their tail which is 60% of the body length, and weigh from 100 to 500 grammes.
Brown rats are also known as common or sewer rats and are good climbers and can swim very well.
Rats will live in any situation that provides food, shelter and water and are commonly found in sewer systems and gardens but also live in lofts, wall cavities and under floorboards.
www.fareham.gov.uk /council/departments/healthcommunity/brownrat.asp   (875 words)

 Rat History
Being that the Brown Rats are larger and bolder they have pretty much taken over the position held for centuries by their cousins the Black Rats.
The Brown Rat have been used first for blood sport and latter in laboratories for experiments so they have been bred down thousands of generations to be docile and friendly towards humans.
The rat is one of the creatures in the Chinese Zodiac.
www.ramshornstudio.com /rat_history.htm   (1551 words)

 Rat   (Site not responding. Last check: 2007-11-05)
Although the roof rat and the brown rat can live in the wild and in high mountains in California, places where there are lots of people have become their favorite environment.
The roof rat, or the fl rat, was brought to Europe from Israel by the Crusaders.
The brown rat is the most hated rat, and next to people, it is an animal that does the most damage in nature.
www.lalc.k12.ca.us /uclasp/urban_science/urban_bestiary/rat.htm   (630 words)

 Rodent Facts: House Mouse   (Site not responding. Last check: 2007-11-05)
Because rats are colorblind and have poor eyesight, they primarily see light, shadow and movement.
Norway rats have an acute sense of smell.
Rats are able to gnaw through wood, lead, aluminum, copper, cinder block and uncured concrete.
www.liphatech.com /rf_norway_rat.html   (298 words)

Some of the females sent us, whom we kept in cages, were with young; and, two or three days before they brought forth, we observed that they gnawed the wood of the cages, and made of the cuttings, which were in considerable quantities, a convenient bed for their little ones.
The brown rats have some qualities which make them approach to the nature of the water-rat.
The brown rats may be taken in their holes by ferrets, who pursue them with equal ardour as they do the rabbit.
faculty.njcu.edu /fmoran/vol4brownrat.htm   (623 words)

 Pet Rats, Fancy Rats, Brown Rat, Black Rat
Rats can live 2 to 3 years, are easy to house and feed, and are mostly odorless.
The disease-carrying rats of the Middle Ages and the most common pests are the fl and brown rats.
Rats are great companions for children, and it's okay to have only one as long as it is given a lot of attention.
animal-world.com /encyclo/critters/rats/rat.php   (2933 words)

 Genome sequence of the Brown Norway rat yields insights into mammalian evolution : Nature
Their physical location relative to the rat draft sequence can however be approximated; the centromeres of the telocentric rat chromosomes (2, 4−10 and X) must be positioned before nucleotide 1 of these assemblies, and those for the remaining chromosomes are estimated as indicated in Fig.
The same phenomenon has occurred in the descent of the rat and mouse from the genome of their common murid ancestor, and we were able to use the human genome, and in some cases other outgroup data, to tentatively reconstruct the sequence of many of these rearrangements in these lineages.
At least half of this (15% of the rat genome) consists of rat-specific repeats, and another large fraction (8% of the rat genome) consists of rodent-specific repeats whose orthologues are deleted in the mouse.
www.nature.com /nature/journal/v428/n6982/full/nature02426.html   (14219 words)

 Is it a Black Rat?
Native rats, such as the Bush Rat, are much shyer animals, and are not found in places where human traffic is frequent - they prefer to nest in dense forest understorey, sheltering in short burrows under logs or rocks, and they line their nests with grass.
The Bush Rat, Charcoal grey to fl or light brown above, cream or white below; sleek smooth coat, is grey to grey-brown or reddish above, grey or cream below and has dense soft fur.
One animal that is sometimes seen and mistaken for a rat is in fact a small carnivorous marsupial - the antechinus.
www.amonline.net.au /factsheets/rattus.htm   (667 words)

 Norway rats (brown rats, house rats, wharf rats, sewer rats)   (Site not responding. Last check: 2007-11-05)
Norway rats are brown with scattered fl hairs, gray to yellow-white on underside.
Roof rat is lighter in color than the Norway rat, and has a pointed muzzle, larger eyes, larger ears; is uniformly colored, almost naked, and has a tail that is longer than the combined head+body length; droppings are spindle shaped and pointed at ends.
Hispid cotton rat has a tail length of about half of its head+body length, coarse fur that is grayish on top and mixed buff, whitish and fl on underside.
www.west-ext.com /norway_rat.html   (596 words)

 Brown rat - Wikipedia, the free encyclopedia
The brown rat, common rat, Norway rat, Norwegian rat or wharf rat (Rattus norvegicus) is one of the best-known and common rats, and also one of the largest.
The brown rat can breed throughout the year if conditions are suitable, a female producing up to five litters a year.
Brown rats supposedly carry some diseases, including Weil's disease, cryptosporidiosis, Viral hemorrhagic fever (VHF), Q fever and hantavirus pulmonary syndrome.
en.wikipedia.org /wiki/Rattus_norvegicus   (1418 words)

 Brown Teal Predators
Their impact on Brown Teal populations is not clear, but they are known to be a major predator of many NZ bird species.
The Norway rat is the largest of rats present in the wild in New Zealand, with a males weighing an average of 450g.
Their impact on Brown Teal is not yet fully understood, but they are a very aggressive bird; they are known to frequent Brown Teal areas and to like farm ponds frequented by Brown Teal.
www.brownteal.com /site/?p=predators   (2049 words)

 BBC - Science & Nature - Pets - Rats
The most common pet rat is a descendant of the brown rat (Rattus Norvegicus), which spread over to Britain from Asia via the shipping traffic in the 18th century, largely replacing the fl rat (Rattus rattus).
Rats were also used in scientific laboratories in the late 18th century.
Brown rats are typically nocturnal, although they will sometimes forage for food during the day.
www.bbc.co.uk /nature/animals/pets/rats.shtml   (300 words)

 Rat Fact Sheet
The Norway rat (Rattus norvegicus, also called the brown rat or sewer rat) is a destructive pest found in urban and suburban neighborhoods.
The most successful and permanent form of rat control is to "build them out" by making their access to structures impossible.
Glue boards are sometimes used to catch a rat that is wary of snap traps.
www.idph.state.il.us /envhealth/pcnorwayrat.htm   (1406 words)

 Ladywildlife's Black Rat Page
The fl rat is a smaller relative of the brown rat and is found in populated areas throughout the world.
Unlike the related brown rat, which is often found in ditches and sewers, the fl rat rarely swims.
Today, the population of the fl rat is steadily diminishing in cool climates, where it lives in buildings and is easier to control than the brown rat.
ladywildlife.com /animal/blackrat.html   (836 words)

 Irish Mammals--:Brown Rat
The fl rat, which first came to Ireland aboard ships in the middle ages, is now rare here.
The brown rat is larger and stronger than the fl rat.
The brown rat is closely associated with human habitation and is to be
homepage.eircom.net /~edrice/mammals/brown_rat.htm   (216 words)

 Brown Rat
Originating in Asia and arriving in North America about 1775, the brown rat is humanity’s worst animal pest.
Fierce and aggressive, no serious inroads have been made in their population by either human or other predators.
The first step in controlling these creatures is good sanitation and proper disposal of garbage, together with the rat-proofing of food storage areas.
www.nature.ca /notebooks/english/brnrat.htm   (136 words)

 Brown rat, Norway rat
Description: Not quite so slender as the fl rat, its tail is relatively shorter, the snout is less pointed, and the ears are shorter.
This rat is not as good a climber as the fl rat, but is an excellent swimmer.
Note: This rat is a serious pest because of the health hazards caused by its presence, including the transmittal of such diseases as bubonic plague and murine (mouse) typhus.
www.americazoo.com /goto/index/mammals/192.htm   (284 words)

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