By far the most common type of Rat found in New Jersey is the Norway Rat (Rattus norvegicus).
Also known as the Brown Rat, ask Sewer Rat, treatment Norway Rat or Warf Rat, these larger rodents can be almost a foot long, not counting the tail and weigh up to a pound. Norway Rats are excellent burrowers, are extremely intelligent and live in large and complex social groupings. This intelligent and social nature has no doubt attributed to their negative perception. In modern society, Norway rats have adapted themselves perfectly to urban areas and sewer systems, living in extremely close contact with humans in inner cities and high poverty areas. Their extremely strong teeth and ability to burrow extensively allow them to move seamlessly through sewer systems and homes, as well as through most construction materials used to keep them out. Like most rodents, Norway Rats have a very high reproductive potential, generating large populations in a very short amount of time.
Thanks in part to their close association with humans, the Norway rat has moved on from its native Asia to colonize every continent on earth, except for Antarctica. Rats are extremely diverse feeders, these true omnivores can scavenge, hunt, forage and steal meals from a variety of sources.