Norway rats nest and burrows underground and they enter buildings to scavenge for food. They are brown or gray in color, covered with shaggy fur. Their stools are capsule-shaped or cylindrical. They are omnivores and usually found where humans dispose their food. Moreover, roof rats are black or brown in color with long tails, large ears and have a pointed nose. Their bodies are smaller and sleeker compared to the Norway rats and their stools are shaped like a banana. They are also omnivores and feed on meat, vegetable, and fruits.