Which of the following is not an alternative name for the Norway rat (Rattus norvegicus)?

The Norway rat, scientifically known as Rattus norvegicus, is commonly associated with a variety of names that reflect its characteristics and habitats. One of these alternative names is "sewer rat," referring to its prevalence in urban sewers and drainage systems. Another commonly used name is "brown rat," which correctly highlights its typical coloration and distinguishes it from related species.

The name "wharf rat" also applies to the Norway rat, as these rodents are frequently found in harbors and along docks. This term emphasizes their adaptation to urban environments and their association with shipping and trade areas.

However, the name "black rat" is actually used to refer to a different species, known as Rattus rattus. This species is distinct from the Norway rat in both appearance and habitat preferences. The black rat is generally smaller, has a more slender body, and is known to be primarily arboreal, frequenting trees and upper areas of buildings, contrasting with the more terrestrial habits of the Norway rat.

Therefore, the reason for identifying "black" as not an alternative name for the Norway rat lies in the differentiation of species and their respective common names in pest control and environmental health contexts. Understanding these distinctions is vital for effective identification and management in