Monster Behind The Wall

It's 3:34 AM and you are in blissful sleep. Suddenly awaken by strange noise coming from the darkness, you feel panic slip in. At first, you think it is one of the cats who are known for their late night adventures. As your mind clears, you notice that both felines are beside you. The chewing and clawing is become louder. This is the tales of a late night visitor you weren't ready for.