All Beings get attached to the surrounding and environment they live in and feel more comfort in familiar environments.
This video shows Whisky in his bed in the sitting-room, cuddling his blanket and getting ready for his daily nap in the peak of comfort and security. We too get attached to the enviroment we live in and to the people close to us. We all can recall moments in our lives when we have felt discomfort or even fear when in unfarmiliar surroundings or when with strangers.
One should always remember that all those now close to us were once strangers and all those places which give us feeling of comfort and security were once unfamiliar to us. Nor the places neither the people have changed, it is our feeling towards them which have changed.