Well, back when i was 5, i was outside in the dark running around the house (because i didn't really care at that age) And after about 4 laps around the house i see this black shadow with yellow eyes, dead staring at me and smiling i ran back into the house and i told my grandparents what had happened and they didn't think anything of it. Anyway, i calmed down later that night and i never saw that shadow again.