DCHP-1 Online
collared lemming 
a rodent, Dicrostonyx groenlandicus, of the Arctic, brown in summer and of a light color in winter.
- 1952 The collared lemming, incidentally, is the only species of mouse that changes color in winter, sometimes becoming light platinum gray or pure white.
- 1952 The collared lemming, incidentally, is the only species of mouse that changes color in winter, sometimes becoming light platinum gray or pure white.