A friend from my post-school days used to live in a graveyard (where her dad was a caretaker). Yes, her house was actually
inside the cemetary! The family dog used to have mad moments of staring at blank, empty walls and corners growling and barking, hackles raised. The cat would screech and run for no reason. The front lawn came complete with gravestones and you had to walk through the graves to leave at night. That was fairly spooky.