Facts about Arctic Fox Seasonal Coat Changes
- 05
During molting, an arctic fox's fur color change is driven by melanin production shifts, with the winter white coat containing far less pigment than the summer coat.
- 04
Seasonal coat changes in arctic foxes are triggered by photoperiod, meaning the changing length of daylight drives the hormonal shifts that initiate molting.
- 03
A arctic fox's dense winter coat is so thermally efficient that the animal does not begin to shiver until temperatures drop below approximately -70°C (-94°F).
- 02
Arctic foxes have a blue-gray coastal color morph whose seasonal coat change is less dramatic, shifting between darker shades rather than white and brown.
- 01
The arctic fox molts twice a year, growing a thick white winter coat for camouflage in snow and shedding it for a thinner brown or gray summer coat.