Norway Rat

Norway Rat

Norway Rat–Overview

Other Names: Brown Rat, Gray Rat, Common Rat, House Rat, Wharf Rat, Water Rat, Barn Rat, Sewer Rat, Super Rat

Diet of the norway rat


Daily Amount:

0.5–1 ounce

Daily Water:

1–2 ounce

Daily Food:

Cereal grains, meats, seeds, cockroaches, fruits, shrimp

Habitat of the norway rat



Throughout the US and Canada

Nest Location:

Burrows in soil, sewers, basements, lower portion of buildings

Home Range:

25–100 ft from nest

Active Periods:

Nocturnal; most feeding occurs 30 minutes after sunset and before sunrise

Reproduction of the norway rat


Litter Size:

8–12 pups per litter

No. of Litters:

4–7 per year

Sexual Maturity:

2–3 months

Gestation Period:

22 days

Breeding Season:

Indoors: All year; Outdoors: Spring & Fall

Ten 10 high activity areas

Top 10 high activity areas

  • Basements
  • Beneath wood piles
  • Near or beneath outside dog pens
  • Garage walls near heaters and stored food
  • Beneath low-lying decks
  • Beneath slab walkways
  • Within brick foundation wall voids
  • Beneath low-lying and cavernous shrubbery
  • Within 100 ft of dumpsters and garbage cans
  • Beneath slabs supporting food bins

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