Norway Rat
Related Category: Vertebrate Zoology
see rat.
More on Norway Rat
Rat - name applied to various stout-bodied rodents, usually having a pointed muzzle, long slender tail, and dexterous forepaws.
Norway Rat*
Order Rodentia : Family Muridae : Rattus norvegicus (Berkenhout) ...
Norway Rats are active day or night. They may dig extensive tunnels and nesting cavities underground, or make their nests in or under packing crates, lumber piles, other debris and buildings.
Norway rats are prolific breeders. The gestation period varies from 21 to 23 days and the number of young from two to 14, averaging seven or eight. At birth they are blind, naked, and helpless.
Norway Rat
Rattus norvegicus norvegicus (Berkenhout)
Description: Like the black rat and house mouse, the Norway rat has been introduced into Kansas. It can be distinguished from other members of its family by: 1) short, coarse, ...
Norway Rat (Rattus norvegicus norvegicus)
Voles and Muskrats
Common Muskrat (Ondatra zibethica) ...
Norway rats (Rattus norvegicus) are originally native to northern China. Following a series of introductions, the species had found its way to Eastern Europe by the early eighteenth century. By the year 1800, they occurred in every European country.
Norway rats (Rattus norvegicus) were present on Whale Island (Moutohora), Bay of Plenty, New Zealand between about 1920 - 1987.
Norway Rat Rattus norvegicus. Exotic. Breeder. Also known as “sewer or wharf rat.' A commensal rodent brought to the United States by early European colonists, albeit considerably later (ca. 1775) than the black rat and house mouse.
Brown rat, Norway rat, common rat
Brown rats have been bred for research and the pet trade. They spread across Britain via the shipping traffic from foreign countries in the 18th Century, largely replacing the black rat.
root rad-, to scratch; cf. Ger. Ratte, Dan. rotte, Fr. rat, &c.), probably in its original sense the designation of the British rodent mammal commonly known as the black rat (Mus rattus), but also applied indifferently to the brown or Norway rat ...
Predation of eggs and chicks by introduced arctic foxes and Norway rats on breeding islands is the largest threat.
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.
Old world rats and mice are represented in Minnesota by the Norway rat and the house mouse, two of the least desirable of our mammals. Both species are capable of producing several litters a year and are notorious for damaging property.
Traces of snow on the ground enabled me to notice a large Norway Rat (Rattus norvegicus) wandering aimlessly along the fence line towards the hawk.
They have never recovered from the hunting pressure of the gold rush era and have suffered tremendously from loss of habitat and non-native predators such as the Norway rat and feral cats.
Back at the feeders we were able to spotlight the Giant White-tailed Rat. Back home one doesn't look for rats on a spotlighting trip, but this is a rabbit sized native rodent not the imported Norway Rat that has become such a pest around the ...
Introduced predators are of particular concern as some of the islands in the Three Kings group are less than a kilometre apart, meaning that introduced predators, such as Norway rats, could swim between them (2).
I clipped the wings of many of them, and turned them loose in my garden, for the purpose of studying their habits in this sort of half-confined state; but they were all soon destroyed by those most destructive pests, the Norway rats, ...
Norway rat (Rattus norvegicus norvegicus)
nothern short-tailed shrew (Blarina brevicauda churchi)
nutria (Myocastor coypus)
pine vole (Microtus pinetorum carbonarius)
pine vole (Microtus pinetorum scalapsoides)
porcupine (Erithizon dorsatum dorsatum) ...
 See also: House Mouse, Weasel, Deer, Muskrat, Harvest mouse
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