What is Hazel dormouse?
{{Taxobox | name = Hazel dormouse | status = LC | status_system = IUCN3.1 | status_ref = <ref>{{IUCN2008|assessors=Amori G. | display-authors = etal|year=2008|id=13992|title=Muscardinus avellanarius|downloaded=29 October 2009}}</ref> | fossil_range = <br/>Middle [[Miocene]] – Recent | image = Haselmaus.JPG | image_size = 240px | regnum = [[Animal]]ia | classis = [[Mammal]]ia | ordo = [[Rodent]]ia | familia = [[Gliridae]] | subfamilia = [[Leithiinae]] | genus = '''Muscardinus''' | binomial = ''Muscardinus avellanarius'' | binomial_authority = ([[Carolus Linnaeus|Linnaeus]], 1758)}} The '''hazel dormouse''' (''Muscardinus avellanarius''), also known as the common [[dormouse]], is a small [[rodent]]. It is the only living species in its [[genus]].<ref>{{cite book |author=Mitchell-Jones A.J. | display-authors = etal |year=1999 |title=The atlas of European Mammals |publisher=Academic Press |location=London |pages=484}}</ref> It is {{Convert|6|to|9|cm}} long with a tail of {{Convert|5.7|to|7.5|cm}}. It weighs {{Convert|17|to|20|g}}, increasing to {{Convert|30|to|40|g}} just before [[hibernation]]. The hazel dormouse hibernates from October to April/May. In British sources, it is normally called the dormouse rather than the hazel or common dormouse. The hazel dormouse is [[Indigenous (ecology)|native]] to northern [[Europe]] and [[Asia Minor]]. It is the only [[dormouse]] native to the [[British Isles]], although the [[edible dormouse]] (''Glis glis'') was accidentally introduced to the British Isles and now has an established population). The locations in the UK where the hazel dormouse can be found is shown on the National Biodivestity Network website.<ref>{{cite web|url=http://www.searchnbn.net/gridMap/gridMap.jsp?allDs=1&srchSpKey=NHMSYS0000080214|title=Grid map of records on the Gateway for Hazel dormouse (Muscardinus avellanarius)|date=2008|publisher=National Biodiversity Network|access-date=2010-01-12|archive-date=2006-01-06|archive-url=https://web.archive.org/web/20060106165016/http://www.searchnbn.net/gridMa