The female fox trekked the two and a half month journey from Norway's Svalbard islands to northern Canada in the longest recorded fastest movement rate for a fox ever. Researchers at Norway's Polar Institute fitted the young female with a GPS tracking device and freed her into the wild in late March last year on the east coast of Spitsbergen, the Svalbard archipelago's main island. The fox was under a year old when she set off west in search of food, reaching Greenland just 21 days later - a journey of 1,512 km - before trudging forward on the second leg of her trek.
She was tracked to Canada's Ellesmere Island, nearly 2,000 km further, just 76 days after leaving Svalbard. What amazed the researchers was not so much the length of the journey as the speed with which the fox had covered it - averaging just over 46 km (28.5 miles) a day and sometimes reaching 155 km.