So Sigurd understands the language of birds, after eating the blood of fafnir the Worm.
"Europa's Fairy Book"
Joseph Jacobs
Everybody will be so amazed that Space Vikings aren't twelve feet tall, with three horns like a Zarathustra damnthing and a spiked tail like a fafnir mantichore that they won't even notice anything less.
"Space Viking"
Henry Beam Piper
Almost at the same moment, the giants Fasolt and fafnir also appear, leading Freya, whom Fricka would fain embrace, but who is withheld from her longing arms.
"Stories of the Wagner Opera"
H. A. Guerber