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Title
Hare fur changes with the seasons #241569131
Description
The thermal insulation of fur is highly dependent on the hair density i.e., number of hairs/ cm2, and on the wind passing over its surface. If there are less than 1,000 hairs/cm2, an 8-mph wind penetrates deep into the fur, but at higher hair densities an 18-mph wind penetrates only a little way into the fur.