Hugin and Munin

Hugin and Munin (ON: “thought” and “memory”) are two ravens who accompany the god Odin. They are sent out by Odin every morning to fly around the world and return by breakfast the next day, whereupon they sit on his shoulders and whisper to him all that has happened on Midgard.

Trivia

 * In the aftermath of battles, they feast on the corpses of those who were slain; this is meant to be seen as a sacrifice to Odin, who, through the swaying of his magic, decides who lives and who dies.