image of rodents

Common Rat

Rattus Norvegicus

  • Brown or black
  • Heavy-bodied
  • 7-9.5 inches long; tail length 6-8 inches
  • Small eyes and ears
  • Blunt nose
  • Fur is shaggy 
  • Droppings are capsule-shaped with blunt ends
  • Omnivorous, but prefer meats, fish, and grain
  • Must have a daily supply of water
  • Lives in underground burrows
  • They enter buildings in search of food
  • Mostly active at night
  • Reaches sexual maturity in 2-5 months
  • They constantly breed throughout the year; litters range from 8-10, females average 6-7 litters per year
  • Adults live up to one year
Other Information
  • Common rat for the Northeast
  • Built for survival
  • Can adapt to different environments
  • Limited speed, but good swimmers and jumpers
  • They can carry many serious diseases
  • They can fit through a hole the size of a quarter