A kind of rat · also called Norway rat, common rat, street rat, sewer rat, wharf rat

3 views: its portrait, and how it looks in the comparison photos.
About
The brown rat is a widespread urban rodent that grows to about nine inches long without its tail.
Brown rats are among the largest muroid rodents, often growing noticeably heavier and thicker than their close relative, the black rat. Across the species, adult weights usually range between 5 and 18 ounces, with males tending to grow larger than females. Despite their bulky bodies, their flexible skeletons allow them to squeeze through openings as narrow as a half-inch.
From Wikipedia
The brown rat, also known as the common rat, street rat, sewer rat, wharf rat, Hanover rat, Norway rat and Norwegian rat, is a widespread, common species of 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.
Read more on Wikipedia →Text from Wikipedia’s “Brown rat” article, CC BY-SA 4.0.
2 on the site
Weight
12.3 oz (350 g)
Quick answer
A typical brown rat is about 9.1 inches (0.23 m) long, stands 2.8 inches (0.07 m) tall, and weighs roughly 12.3 ounces (0.35 kg). This body size is roughly comparable to the length of a standard hardcover book.
Typical figures, the same ones every comparison on the site uses; real ones vary.
More like a brown rat
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Next to anything: a person, a car, another rat.