Rattus norvegicus

Rattus norvegicus, commonly known as the brown rat or Norway rat, is a large rodent species found worldwide. They are highly adaptable, thriving in urban and rural areas, and are known for their strong sense of smell and intelligence. Typically measuring 9-11 inches excluding the tail, they have brown or gray fur, a pointed snout, and a long, scaly tail. They are omnivorous, feeding on a wide variety of food sources, which makes them successful in diverse environments. While they can be beneficial for scientific research, they are also considered pests because they can transmit diseases and damage property.