Norway rats are common. They are subject to persistent pest control due to the damage they cause and the numerous diseases they spread.
Norway rats are originally native to northern China. These rats were native to forests and brushy areas; today however, they prefer a habitat right alongside the rapid expansion of human populations.
Rats are excellent foragers. They feed on many types of food including food discarded by humans. They also eat mice, chicks, birds, small lizards, and occasionally fish.