This footage was taken on Svalbard.
Arctic foxes are notoriously unafraid of people, and early Arctic explorers even kept them as pets.
They are very closely related to the swift fox of the North American prairie. Traditionally, kit and swift foxes were considered to be the same species, but it was found that in terms of their genetic make-up, kit and swift foxes vary as much from each other as swift foxes vary from Arctic foxes.
Arctic foxes usually have quite large litters. However, very few kits in an individual litter will survive to weaning. Even fewer will survive to adulthood.
These little foxes often follow polar bears out onto the ice, where they scavenge the bears’ kills. They are the jackals of the ice. I suppose that any animal that has developed enough courage to scavenge off a polar bear is going to have enough courage to scavenge off of people.
And that may be why it was so easy for trappers and explorers to take these animals. In the polar regions, a fox must take food where it find it. Excessive caution can be death sentence, just as too little caution spelled doom for countless species native to islands. Curiosity really did kill the fox.