What it often means
- A territory cut short: a cat makes the rounds of all his rooms, and a closed door takes a piece of his domain away.
- You: he wants to be where you are, behind the bedroom door in the morning, or when you shut yourself in the bathroom.
- A resource behind the door: his litter box, water, bed or favorite window is in the closed room. He has a real reason to insist.
- A rewarded habit: if the door opens now and then, every scratch is a lottery ticket, and he scratches more and more.
- The urge to go out, at the front door: smells, neighborhood cats, or the mating drive of an unneutered cat.