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This is a list of the largest rodents. Rank Common name Scientific name Status Maximum body mass [kg (lb)] Image Notes 1: Giant pacarana: Josephoartigasia monesi:
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 ...
In 2015, the discovery of fossils of "seven new species of giant rat", including the "largest rat ever" on the island of East Timor was announced. The biggest of these rats was described as weighing "five kilos (11 pounds), the size of a small dog," and was referred to as the "Giant Rat" in news stories. [3]
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 Friday ...
Coryphomys is an extinct genus of rats, known from sub-fossils found on Timor. Its name is Greek for "top-of-the-head mouse" or "summit mouse". Species include Coryphomys buhleri and Coryphomys musseri. [1] Archaeological research on East Timor has revealed the bones of rats weighing up to 6 kilograms (13.2 pounds) when adult [citation needed ...
NEW YORK, NY - JULY 4: A rat sniffs a box with food in it on the platform at the Herald Square subway station in New York City on July 4 2017.
In Washington, D.C., for example, the rat population is growing 1.5 times faster than it is in New York City, because the more northerly city has taken notable steps to keep rodents in check. In ...
However, a 2023 study estimates that there are approximately 3 million rats in New York, which is close to a third of New York's human population. The city's rat population is dominated by the brown rat (also known as the Norway rat). The average adult body weight is 350 grams (12 oz) in males and about 250 grams (8.8 oz) in females.