How do our cats tell us apart?
Our two cats sleep in another room of the house which is down a hallway, and yet when I have to get up in the middle of the night to go to the restroom they get up, come down the hallway and go straight to the restroom where I am. Yet if my husband gets up, they never move from their beds.
We don’t speak when we get up so they can’t use our voices as a clue as to who’s gotten up. How do they know the difference between who’s going to the restroom in the middle of the night?