Black Rats & Norway Rats are very common in Lower Mainland area or BC. Since they can spread a number of diseases and can damage your property, they should be dealt with immediately. Their presence can normally be detected by the presence of their droppings which are oval shaped and black colored measuring 15-20mm.
Norway Rats are also called Sewer Rats, and Wharf Rats. They are normally light in color (Normally Grey or Brown). They are bigger than the Black Rats in size. The adult body is normally between 19-22 cm long and the tail is normally 15-22 cm long. Unlike their name suggests, they were originated in Asia and spread throughout the world through ships. They generally prefer moist areas and usually make their way inside the house through basements and crawl spaces, although they are good climbers and can enter the houses through attics as well. Females can produce up to 14 pups in a littler (normally 7) and up to 90 pups in their life time. They can live up to a year.
Roof Rats are also called Black Rats, Ship Rats, and Alexandrine Rats. They are mostly Black in color, although they can have several color variations. They also originated from Asia. They usually have a long tail which is usually longer than the combined length of their bodies. The adult body is normally between 15-22 cm long, and the tail is normally 18-25 cm long. They are very good climbers and normally make their way inside the house through attics. Females produce up to a dozen pups in a litter and can have up to 80 pups in their life time. They can live up to a year.