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The brown rat (Rattus norvegicus), also known as the common rat, street rat, sewer rat, wharf rat, Hanover rat, Norway rat and Norwegian rat, is a widespread species of common rat. One of the largest muroids, it is a brown or grey rodent with a body length of up to 28 cm (11 in) long, and a tail slightly shorter than that. It weighs between 140 ...
The fancy rat (Rattus norvegicus domestica) is the domesticated form of Rattus norvegicus, the brown rat, [1] and the most common species of rat kept as a pet.The name fancy rat derives from the use of the adjective fancy for a hobby, also seen in "animal fancy", a hobby involving the appreciation, promotion, or breeding of pet or domestic animals.
A closeup of a rat tail. The characteristic long tail of most rodents is a feature that has been extensively studied in various rat species models, which suggest three primary functions of this structure: thermoregulation, [13] minor proprioception, and a nocifensive-mediated degloving response. [14]
The albino laboratory rat with its red eyes and white fur is an iconic model organism for scientific research in a variety of fields. Laboratory rats or lab rats are strains of the rat subspecies Rattus norvegicus domestica (Domestic Norwegian rat) which are bred and kept for scientific research.
New York City hired its first-ever "Rat Czar" in 2023, and an investigation by CBS New York found rats had an increase of more than 7% since the Adams administration took office in 2022 and ...
The best-known Rattus species are the black rat (R. rattus) and the brown rat (R. norvegicus). The group is generally known as the Old World rats or true rats and originated in Asia . Rats are bigger than most Old World mice , which are their relatives, but seldom weigh over 500 grams (1.1 lb) in the wild.
The following is a list of mammals with non-domesticated populations in Norway. Insectivores ... Brown rat, Rattus norvegicus; Birch mice. Northern ...
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