The Metamorphosis pg 35

Gregor continues becoming more like an insect rather than a person.  His behavior resembles that of an insect.  He also seems to be growing apart from his family who no longer treat him like their own.  They take away all the furniture in his room.  At first he likes this, but he soon realizes that this represents his distance from humanity.  He develops the ability to climb walls.  Gregor seems to feel saddened over all that has happened to him.