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". …

5 days ago · 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 …

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

Dec 2, 2025 · There are over 50 known species of rats found around the world but the 2 species of “true” rats most common to California are the Norway Rat and the Roof Rat.

The term “rat” encompasses several species within the family Muridae, the largest family of mammals. The most familiar species is the brown rat (Rattus norvegicus), also known as the …

The two most widespread and studied species are the brown rat (Rattus norvegicus) and the black rat (Rattus rattus), both of which have followed human expansion across the globe. …

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, …

The meaning of RAT is any of numerous rodents (Rattus and related genera) differing from the related mice especially by considerably larger size. How to use rat in a sentence.

The brown rat, R. norvegicus, also known as the Norway rat and the sewer rat, is a ground dweller and naturally digs its burrows near water. It gradually spread out of Asia and reached …

May 27, 2024 · A rat uses its whiskers to safely navigate its way through dark tunnels and narrow spaces. Their whiskers are doubly important because these rodents are active during the night.