my last year of college, I am asleep, my room is on the 3rd floor and my bed is next to 2 wallls, I awake to hear this scratching inside the wall, I'm like what hte f*** is that a mouse, nah can't be it's too loud and sounds too big, next morning I ask my roomates if they heard it too, they said yes, we come to find out we have a racoon living inside the wall of our house, it can get in from climbing a tree and entering the house where a hole is in the roof under a overhang....so creepy.