Dáinn, Dvalinn, Duneyrr and Duraþrór
In Norse mythology, four stags or harts (male red deer) eat among the branches of the world tree Yggdrasill. According to the Poetic Edda, the stags crane their necks upward to chomp at the branches.
Source: Wikipedia — Dáinn, Dvalinn, Duneyrr and Duraþrór (CC BY-SA 4.0)