The critically endangered polar fox in Norway is being saved by a breeding program. I wrote about how puppies from parents caught in the wild were released in nature, a couple of days ago. These pictures are from the captive breeding programme. Adult foxes captured in the wild some years ago are breeding very well, in an isolated area in the mountains. As you can see they can get quite a lot of puppies when the conditions are right, since these are from one family.
The center for the breeding program, Sæterfjellet avlsstasjon, is situated next to Dovrefjell national park. The animals live in big enclosures, otherwise the nature is more or less the same as were they live in the wilderness. The polar foxes have as little contact with people as possible, since the young ones are going to be released in nature. But they have to be fed, and there is also a system that monitors what is happening in the dens.