It's late at night, and you're sitting by your computer, unaware of the things going on around you. Your parents are gone for the night, and you are alone. Suddenly, a strange sound of... hooves on your front porch disturbs you from whatever you were doing. You decide to investigate. What you see shocks you.

Made for EQD Nightmare Night 2013 contest.

EDIT: Damn it, just realized this story is too short to be accepted in the contest... and I can't submit another one... Oh well, maybe next year.