mystery sound

  One day, I woke up to a sharp scratching. It was barely 3 o'clock in the morning. It sounded like an animal was in my ceiling. I lie awake for what felt like hours. The scratching got louder and clearer. I wondered if it could be a mouse or even a raccoon. Finally, i was fed up. I got out of bed and, leaning over to grab a book, started hitting my ceiling. To my great relief, the scratching stopped. I got back in bed, hoping to catch a few more hours of sleep. I was almost asleep when i hear, "Sca-ahh-ahh...Sca-ahh-ahh"  The scratching sounded closer then before. And, like a maniac, next thing i knew, i was running up the stairs to my parents room. I don't think that i've ever ran so fast. And i never found out what my mysterious sound was...