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.
Rat Habitat. Rat species are either terrestrial or arboreal in nature, although rats preferring one habitat are capable of inhabiting others. The Norway rat and roof rat are the two most common North American rat species. They are terrestrial and arboreal, respectively. Norway rats are most commonly burrowers. They build their nests outside the walls of homes or in various clumps of vegetation.