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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 ...
Roof rats, which have tails longer than their heads and bodies, tend to be climbers and may be seen on fence lines and trees, Miller said. Reports of rats in Tri-Cities neighborhood groups seem to ...
The term and concept derive from a series of over-population experiments Calhoun conducted on Norway rats between 1958 and 1962. [1] In the experiments, Calhoun and his researchers created a series of "rat utopias" [ 2 ] – enclosed spaces where rats were given unlimited access to food and water, enabling unfettered population growth.
Rats are by far the most common introduced mammals on seabird islands. [2] [3] Currently, approximately 80% of islands worldwide have populations of introduced rats. [2]The most common introduced species is the Norway rat (Rattus norvegicus), but black rats (R. rattus, also known as “ship rat”) and Polynesian rats (R. exulans) have found their way to offshore islands and have subsequently ...
Rodent mite dermatitis (also known as rat mite dermatitis) is an often unrecognized ectoparasitosis occurring after human contact with haematophagous mesostigmatid mites that infest rodents, such as house mice, [1] rats [2] and hamsters. [3]
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Rats, also known as Rats NYC, is a 2016 American documentary horror film directed by Morgan Spurlock. [ 1 ] [ 2 ] Based on a book by Robert Sullivan and distributed by the Discovery Channel , the film chronicles rat infestations in major cities throughout the world.