a rare colour phase of the Arctic fox.
See also: Arctic fox
- 1779  (1792)  The whole of what we got at this place is as follows, viz. fifteen silver foxes, twenty-eight crosses, nineteen yellows, twenty-six whites, and one blue fox, total ninety-six.
- 1952  Blue foxes, a colour phase (one or two percent) of a white fox litter. . . .