Rattus norvegicus

SPECIES: Rattus norvegicus (Order Rodentia; family Muridae)

COMMON NAME: Brown rat

SIZE: Body 19-26 cm; tail 15-22 cm, longer than the head and body combined.

WEIGHT: 300 gr.

LIFECYCLE: Reproduces in spring-summer with 3-5 litters of 4-7 young on average. Gestation lasts 22-24 days, and the young reach sexual maturity in three months.

HABITAT: lives in colonies, nesting under the ground near streams, neglected and overgrown areas (sewers, wells blacks etc.)

DIET: omnivore, with a preference for foods of animal origin. Consumes 25-60 grams each day.

DAMAGE: is the largest of the cosmopolitan species and is also the one that currently presents the greatest risk to humans from a health perspective.

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