Norway rat - what is a Norwegian rat?

What is a Norway rat

Norway rat – what is a Norwegian rat?

Definition of a Norwegian rat

Better known as the “sewer rat”, the Norway rat is gray-brown in color and measures between 30 and 45 cm, including its tail. This rodent is able to climb, swim and jump to find their way inside buildings and homes. It may be successful in entering it either through a construction defect, by widening existing slots and holes, or through drainage pipes. In 95% of cases, the intrusion of Norway rats is due to a defect in the sewer system, while only 5% of rats enter through poorly closed doors or through leaky windows in the basement. soil, for example.


The Norway rat eats almost everything, and, cannibal in its hours, is in constant search of food. This rat prefers dark places to feed, hide and build its nests. It manifests itself especially during the night when there is no activity. The female usually gives birth to a litter of 6 to 14 young, and can reproduce about nine times for a life expectancy of 18 months.