Things I did not know before viewing this adorable video shot by Surrey Wildlife Trust Mammal Project Officer Dave Williams:
1) The dormouse, a little rodent species you'll find in Britain, hibernate in the winter in nests they hide on the ground.
2) The dormouse spends up to one-third of its life in hibernation, and typically begin that winter "sleep" when the first frost hits, and their food sources are gone.
3) They lose about a quarter of their body weight during hibernation.
4) The word "dormouse" comes from the Anglo-Norman dormeus, which means "sleepy (one)"
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(via @joeljohnson, photo: Dave Williams, Surrey Wildlife Trust)