Norway rats are introduced in Connecticut and closely tied to people, especially around ports, dense development, farms, refuse, and shoreline infrastructure. Records at coastal parks do not make them a characteristic marsh mammal; they more often indicate buildings, food waste, or armored edges nearby. A blunt muzzle and a tail shorter than the head and body help distinguish them from black rats.
They are active year-round, with record peaks in August and November–December. Observe only from a distance and avoid droppings, burrows, and contaminated food or water; sightings around facilities are best reported to the site manager.
Full species profile
