Apodemus Sylvaticus, also known as the Eurasian wood mouse, is a common small rodent found across Europe and Asia. There are several synonyms used to refer to this species. One of the most common is the field mouse, which is used to describe many small rodents that live in fields and other open habitats. Another synonym is the long-tailed field mouse, which is a reference to the species' long tail. The term sylvan mouse is also used to describe this species, as it is found in woodland habitats. Other synonyms include the European wood mouse, the woodfield mouse, and the Hazel dormouse.