The animal is bigger and stronger than the arctic fox and so can outcompete it for dens, food and can even predate on arctic fox pups. Increased human activity in the North from things like tourism and fishing appears to be one factor drawing the red fox north, Tolvanen said. “There’s more food for red fox around the settlements, and it’s not far from the settlements to the tundra,” he said. “The feeders are made so the entrance is big enough for an arctic fox, but too small for a red fox to get in.”Arctic fox by the numbers 2022 was an encouraging year for the arctic fox in the Nordic countries. The rodent uptick, a food source for arctic foxes, is also likely playing a roll in supporting a higher arctic fox population, he said.