Rats are typically distinguished from mice by their size. Usually the common name of a large muroid rodent will include the word "rat", while a smaller muroid's name will include "mouse". …

The Brown Rat is among the most widespread rats in Washington! It goes by many names, including the common rat, street rat, and sewer rat. You may also know it as the gray rat or …

Sep 17, 2025 · Rat, the term generally and indiscriminately applied to numerous members of several rodent families having bodies longer than about 12 cm, or 5 inches. (Smaller thin-tailed …

5 days ago · The two primary types of rats that are most familiar to people worldwide are the brown rat and the black rat. The brown rat, also known as the Norway rat, is larger and is …

Some rodents that we call “rats” are not true members of Rattus, including the pack rat, naked mole rat, and giant pouched rat.

Apr 27, 2023 · With nearly 60 species of rat discovered so far, these rodents come in all sizes. They are typically 5 inches (12 centimeters), or longer, according to Encyclopedia Britannica.

A Norway rat can have litters from 6 to 10 young, and can be of adult breeding age in as little as three to four months. Washington is home to both native and non-native rats, the latter …

Aug 12, 2024 · Rats and mice are very different in behavior as well as size. It is important to understand these differences to control them successfully.

Rats belong to the family Muridae and the genus Rattus, which includes well-known species like the black rat (Rattus rattus) and the brown rat (Rattus norvegicus). With their strong teeth, …

Perhaps the most well-known rat species is the Norwegian brown rat, Rattus norvegicus. They are thought to have originated in China but travelled on ships and colonised other parts of the world.