Mountain Hare

The mountain hare measures 430–610 mm from head to body and weighs approximately 1–4 kg, with females generally larger than males. Its coat undergoes seasonal molts controlled largely by day length: brown summer fur is replaced during autumn by white or gray winter pelage, then returns to brown in spring. Geographic variation is substantial, and northern animals tend to be heavier than those from southern populations. (Animal Diversity Web)

Mountain hares range widely across the Palearctic and occupy tundra, taiga, forest, moorland, and mountain environments. They are principally nocturnal and rest by day in shallow ground or snow depressions called forms. Seasonal foods include leaves, twigs, alpine plants, grasses, lichens, bark, and winter heather. Females may produce one to three litters annually, each usually containing one to four leverets, after a gestation of approximately 44–54 days. (Animal Diversity Web)