It’s thought to be able to sense it using a protein in its eyes called cryptochrome. With fine warm underfur making up 70% of its coat and furry feet soles, the arctic fox is the best insulated ...

Mark Williams (UK/Canada) spots an Arctic fox in the distance, moving across the tundra. A glimpse of movement across the treeless tundra caught Mark’s eye. Through binoculars he spotted an Arctic fox ...