They were known to be huge clean freaks, but they had no issue using their urine to get ahead in life. They would collect a fungus called touchwood from tree bark and boil it for days in urine to make something similar to felt. The sodium nitrate would allow the material to smolder instead of burn, so the Vikings had portable fire.
#9 Odins ravens were named Hugin and Munin.
Runes were not magical, they were letters just like the abc we use today.
#11 The wolf that tok Tyrs arm was named Fenris.
In fact, Vikings weren't more or less brutal than other warriors of eastern Europe. They were described as if only because writtend sources were written by clergy, which were targeted by first raids, when Vikings were payen. Because no christian would attack a church and Christian church wealthy it explain why first sources talks about Vikings as calamity and stop at the moment Vikings convert themselves to christianism.