The spider-tailed horned viper is perfectly camouflaged, almost invisible, except for its unique bulbous tail tip with long drooping scales that look like a leggy spider.
Horner syndrome involves miosis or constriction of the pupils, ptosis or the drooping of the eyelid, and anhidrosis which is an inability to sweat in the face.
So forget about long nights, with eyelids drooping over pages and pages of text, scientific research has expressed quite clearly that that isn't the way to study smart.
Then he said very seriously, his ears drooping, 'Dobby wishes he could help Harry Potter, for Harry Potter set Dobby free and Dobby is much, much happier now.'