I once had a German Shepherd that was not the normal, confident Shepherd. She came from a bad situation, and was frightened of everything and everyone. Her first few nights with us were awful for her and us. On night 4, I brought down the laundry to do the next morning, and she pulled out a pajama of mine from the dirty laundry and took it into her crate. She slept the whole night, not even a whimper. That pajama became her security blanket for the rest of her life.