Two cats, one apartment

The short answerMost two-cat tension in a small apartment comes from shared bottlenecks: one litter box, one food bowl, one hallway. The fix is one more of everything than you have cats (three boxes, two feeding stations, two water bowls) and vertical routes so a cat can cross the room without walking past the other one.
The resource count
| Resource | For two cats | Where |
|---|---|---|
| Litter boxes | 3 | Two locations at least - a double cabinet counts as one location |
| Feeding spots | 2 | Out of sight of each other; not next to a box |
| Water | 2 | Away from food |
| High perches | 2 or more | One per cat, ideally at different heights |
| Hiding spots | 2 | A condo, a covered bed, a cabinet with the door ajar |
| Scratching | 2 posts or boards | Near where each cat sleeps |
A 600 sq ft plan
- Living room wall: a run of wall shelves 5-6 ft up lets the confident cat travel above the sofa. A 6-piece set like The Wall Gym covers about 8 ft of wall and each piece holds 40 lb.
- Corner by the window: one tall tree with two perches at different heights - The Blossom Tower has 7 levels, a large condo and a hammock, so two cats can share it without touching.
- Bedroom: the second tree or a single shelf set; The Wall Loft is a 3-piece condo, hammock and bed on a 19.7 x 33 in patch of wall, rated for cats up to 10 lb.
- Bathroom or hallway: a 47 in double cabinet like The Duplex holds two pans and has a cat passage at each end so nobody gets cornered. Put the third box somewhere else.
Signs the layout is working
Within two to three weeks you should see both cats using the high routes, no ambushes at the litter box, and eating at the same time in different spots. If one cat still guards a doorway, add a shelf route over that doorway - it is almost always a floor-level bottleneck.
If fighting involves injuries, or one cat stops eating or using the box, talk to a vet or a certified cat behaviorist; furniture solves crowding, not medical pain or a real personality clash.


