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.
Why do sewer rats grow so much larger then pet rats do? Are they a different species and if so how come they do not make it into the pet trade as in captive bred clean versions? I saw a rat as big as two large cats within one the other day and this got me to thinking, hence the question above.