Dáinn, Dvalinn, Duneyrr and Duraþrór are four magical creatures that lived in Norse mythology. They were magical deer-like animals and each had a special power. Dáinn could sense danger and death, Dvalinn could put people to sleep, Duneyrr could speak and understand the language of birds, and Duraþrór could run so fast that it seemed like he could fly. Together, they were called the Four Stags of Old Norse mythology, and they were powerful protectors of the gods and goddesses.