The best-known rat species are the black rat (Rattus rattus) and the brown rat (Rattus norvegicus). This group, generally known as the Old World rats or true rats, originated in Asia.

This subspecies, called the Fancy Rat, was bred specifically for the pet trade. Besides companion animals, rats can be trained for many jobs to assist humans, like detecting gunpowder for forensic …

Mar 15, 2025 · The Norway Rat, also known as the brown rat, is one of the most widespread rodent species. It is commonly found in urban environments, garbage dumps, woodlands, and fields where …

Jul 28, 2025 · The brown rat, also known as the Norway rat (Rattus norvegicus), is one of the most widespread and adaptable rodent species on the planet. It thrives in both urban and rural …

Apr 17, 2026 · Signs of a rat's presence are droppings, gnawing marks, tracks, runways, and burrows. Like mice, rats are nocturnal and have very poor eyesight but have very strong senses of smell, …

Apr 23, 2026 · Here are 10 rat facts you (probably) haven't heard before. 10 amazing rat facts 1. There are more brown rats in the world than any other species This makes rats the most numerous species …

Jul 9, 2026 · 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 rodents are …

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, common species of rat.

May 27, 2024 · In many regions and in scientific/laboratory contexts, the most commonly implied "rat" among true rats (Rattus) is the brown rat due to its global commensal presence and extensive use in …

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 Norway rat, and …