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Many parts of the world have been populated by rats secondarily, where rats are now important invasive species that compete with and threaten local fauna. For instance, Norway rats reached North America between 1750 and 1775 [80] and even in the early 20th century, from 1925 to 1927, 50% of ships entering the port of New York were rat infested ...
The term rat is also used in the names of other small mammals that are not true rats. Examples include the North American pack rats (aka wood rats [3]) and a number of species loosely called kangaroo rats. [3] Rats such as the bandicoot rat (Bandicota bengalensis) are murine rodents related to true rats but are not members of the genus Rattus ...
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Brown rats are the undisputed winners of the real rat race. New research suggests that they crawled off ships arriving in North America earlier than previously thought and out-competed rodent ...
Brown rats are the undisputed winners of the real rat race. New research suggests that they crawled off ships arriving in North America earlier than previously thought and out-competed rodent rivals – going on to infuriate and disgust generations of city-dwellers and becoming so ubiquitous that they’re known as common rats, street rats or sewer rats.
Scientists have some good news for rats and some bad news for city-dwellers. Rat populations are rising in cities including Washington D.C. and San Francisco, reports a study released last Friday ...
Kangaroo rats, small mostly nocturnal rodents of genus Dipodomys, are native to arid areas of western North America.The common name derives from their bipedal form. They hop in a manner similar to the much larger kangaroo, but developed this mode of locomotion independently, like several other clades of rodents (e.g., dipodids and hopping mice).
Richardson also suggested that less vegetation, along with denser living conditions and strapped rat control resources, are helping rats thrive in many North American cities.