Making deer glow to prevent cars from hitting them

The were officially extinct in Norway and Sweden until 1983 when a den was found. I don’t know if a tiny population had lived there all the time or if they had just immigrated from the East. Still a lot of hatred of wolves both for taking livestock, for competing with hunters for elk and for threatining dogs. I think the initial fear that they would go around killing humans has subsided, to the extent it was ever real and not just an excuse to get rid of them.