Prepare Your Sanctuary
Before your new cat comes home, designate a separate room for them. In a compact apartment, a bathroom or even a large closet can work. This “sanctuary room” must have its own food, water, litter box, and comfortable bedding. This initial separation is non-negotiable;
it gives the newcomer a safe space to decompress and prevents immediate territorial disputes with your resident cat. It’s crucial the cats have no physical or visual contact during this first phase, which can last from a few days to a week.
The Power of Scent
Cats communicate heavily through scent, and you can use this to your advantage. Once the new cat is settled in its room, begin “scent swapping.” Take a clean cloth or sock and gently rub it on each cat’s cheeks and head to collect their unique scent. Place the other cat's scented item in their respective areas for them to investigate on their own terms. You can also swap their bedding or soft toys. The goal is to familiarise them with each other’s smell, creating a “group scent” and making the eventual face-to-face meeting less shocking. This process helps them accept the other's presence as part of the home territory before they even meet.
Feeding and Positive Association
The next step is to create positive associations with each other's presence. Begin feeding both cats on opposite sides of the closed door to the sanctuary room. They will be able to smell and hear the other cat while enjoying something they love—food. Over several days, gradually move the food bowls closer to the door. If either cat shows signs of stress like hissing or refusing to eat, move the bowls further apart again and proceed more slowly. This teaches them that the other cat’s presence predicts a pleasant experience.
First Sight and Supervised Meetings
Once both cats are eating calmly right next to the closed door, you can allow the first visual contact. Stack two baby gates in the doorway or crack the door open just enough for them to see each other without being able to make physical contact. Keep these first visual sessions short and end on a positive note with treats or praise. When they seem calm, you can proceed to short, supervised interactions in a neutral space. Use toys, like a wand or laser pointer, to engage them in parallel play, not forced interaction. Always have an escape route available and end the session before any signs of tension appear. If a fight breaks out, make a loud noise or spray them with water to distract them; never try to pull them apart physically.
Maximising a Small Space
Living in a compact apartment means you must be smart about resources to prevent competition. The golden rule is to have one more litter box than the number of cats (so, three boxes for two cats) placed in different locations. Provide multiple sources of food and water as well. Critically, expand their territory vertically. Invest in tall cat trees, shelves, and window perches. This allows them to create distance and establish their own preferred spots, which is essential for reducing conflict in a small footprint. Territorial aggression is often about competition for resources, and in a small home, vertical space is a valuable resource you can easily add.
