When they are 4 years old
None of the above. It's Harry Potter's wand. He stuck it in there when he battled against their evilness. He had anger issues.
An Alicorn
Unicorns are famous for their ability in magic and for their horn.
By somebody naming them when someone adopt them from the evils
the unicorns horn is 12 inches long
You are possibly referring to a decoy detonator which is described as being horn-like. Harry used one in Harry Potter and the Deathly Hallows to enter Dolores Umbridge's office in The Ministry of Magic. It is an object that makes a lot of noise in order to divert attention away from the user.
any evil subject at all, and i think the unicorns can live for a week w/ out its horn before it dies and the horn loses its powers
Legend
Sadly there are no unicorns.
Yes! What else is their horn for?
* According to the movie 'Legend' the horns of the unicorns controlled the arrivals of the seasons. * Tradition has the unicorns horn to be the cure for all poisons.
unicorns are real but it's just a reindeer with a broken horn.