@Nedalin: That sort of IS a connection. I wouldn't be surprised if the idea of a hangover feeling like a cat's claws went back to proto-viking times, leading to both the saying and this mythological beast.
Particularly since there is so much shared culture there. At least until the Christians managed to take the whole Germany region, and cracked down on that sort of stuff, while causing the remaining tribes to make peace and unify (to some degree).
I think I went off on a tangent there. Cats. Their claws are sharp.
@LiTMac
I doubt that there is a connection.
I am not sure about the origin of the phrase, but in old illustrations hangovers are often depicted as black cats sitting on someones head, aggressively sinking their claws into it.
To go deeper into that matter: We use the female word (Katze/n) to describe the species, but use the male word (Kater) for hangover.
The most hilarious thing about this is the fact that the word for "hangover" in my language is the word we use for "cat" (so if someone's hungover, we say "he has a cat"). So in here we have cat-people who will have a cat the next morning. xD
Does this have anything to do with the German (yes, I know it's not Danish) phrase "Ich habe einen Kater."? I've always been confused by that, and German is not my first language.
I'm going to die over how freaking adorable that is! But I also thought they were drinking milk like beer at first which makes this even more adorable..... soooo cute!
O
This one didn't drink even one drop. Khajiit is innocent of this slander! XD