A genus of small arctic rodents known as collared lemmings, characterized by a two-pronged or bifid claw structure.
From Greek 'dikros' (two-pronged) + 'stony' (claw). Named for the unusual double claws that appear on the hind feet during winter in these arctic animals.
Collared lemmings have claws that literally split into two prongs in winter—it's like they're wearing ice cleats that grow from their toes for climbing on frozen ground!
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