We moved into a new apartment with a wood stained door. The dog misses us when we leave and sometimes jumps up and scratches around the doorknob, trying to get it to open. It has scratched the door up a little, and we want to keep it from being scratched further. I have considered putting shelf paper around the knob, but I wonder if it will be hard to remove when we move out, or if it is too thin for this task. What can I put around the doorknob that will protect the door, but be easy to remove once we move out?