5025 x 3363 px | 42,5 x 28,5 cm | 16,8 x 11,2 inches | 300dpi
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Muscardinus avellanarius Linnaeus 1758 is a small mammal. It is the only living species current classified in the genus Muscardinus. It is 6-9 cm long with a tail of 5.7-7.5 cm. It weighs 17-20g, although this increases to 30-40g just before hibernation. The Hazel Dormouse hibernate Hazel dormice are the only small mammals in Britain to have a completely furry tail. They have golden-brown fur and large black eyes. They are nocturnal creatures and spend most of their waking hours among the branches of trees looking for food. They will make long detours rather than come down to the ground and expose themselves to danger. In winter (early October), dormice hibernate in nests beneath the leaf litter on the forest floor. When they wake up in spring (late April or early May), they build woven nests of shredded honeysuckle bark, fresh leaves and grasses in the undergrowth. If the weather is cold and wet, and food scarce, they save energy by going into torpor; they curl up into a ball and go to sleep. Dormice, therefore, spend a large proportion of their lives sleeping; either hibernating in winter or in torpor in summer.
