How to Treat a Jammed Finger - Health Sutra - Duration: 1:54. Health Sutra - Best Health Tips 79,423 views
Brown rat. The brown rat, also referred to as common rat, street rat, sewer rat, Hanover rat, Norway rat, Norwegian rat, or wharf rat (Rattus norvegicus) is one of the best known and most common rats.
In Washington, they are now found wherever humans have established permanent residence or industry. Old World rats include the Norway rat (Rattus norvegicus, Fig. 1), also known as the brown rat, sewer rat, or wharf rat, and the black rat (Rattus rattus), also called the roof rat.est Sites. 1  Roof rats build nests in attics, trees, and overgrown shrubbery or vines. 2  Norway rats prefer to nest at or under ground level, and in the lower floors of buildings. 3  Rats can have several nest sites. 4  Due to their daily need to drink water, rats prefer to nest where water is easily available.