Gairdner's shrewmouse, also known as the Pacific shrewmouse, has several synonyms that are commonly used to refer to this small mammal. Some of the most frequently used synonyms include Sorex gairdneri, the coast short-tailed shrew, and the western shrewmouse. These names all refer to the same species of shrew that is found in the Pacific Northwest region of North America. Despite its small size and unassuming appearance, Gairdner's shrewmouse plays an important role in its ecosystem. These animals are known to feed on insects and other invertebrates, helping to control populations and maintain a balance within their habitat.