Unicorn horns

[Claire]

No: HPFGUIDX 90592


Sylvia:
> >But I'm still puzzled as to how they obtain the unicorn's horn 
> >without harming the animal.  Do unicorns shed their horns? Or are the 
> >horns removed after the creature has died naturally?  I imagine 
> >unicorns must be pretty rare, even in the WW so how do they obtain 
> >sufficient horns for school-children to use in potion making?

 
Nice question... Antlers are shed (James Potter's if a garden variety
stag, and not an animagus or Patronus, would shed his antlers once a
year). 

Horn is NOT shed, and Unicorns have Horns. As I recall, horns can continue
growing and if worn out, they will continue adding materials from the base
of the horn. So.... anyhoo, perhaps if a unicorn's horn is cut off, it can
regrow a new one. 
 
Now of course being magical, perhaps Unicorns do break the rules and shed
their horns although perhaps they do so when they fell like doing so.
Otherwise what is the point of being magical?
 
Alice