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Introducing a New Cat to Existing Cats
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Cat CareMay 31, 2026

Introducing a New Cat to Existing Cats

A slow, scent-first introduction is the single biggest predictor of long-term harmony between cats.

Go slower than you think

Rushing introductions is the #1 cause of cat conflict. Plan on 2–4 weeks minimum.

Week 1 — Separation

Keep the new cat in their own room with the door closed. Swap blankets between the rooms daily so each cat learns the other's scent.

Week 2 — Sight without contact

Crack the door (or use a baby gate with a sheet over the top) so they can see each other briefly during meals. Feed both cats on opposite sides of the door.

Week 3 — Supervised visits

Short, calm visits in a neutral room. End on a positive note before tension builds.

Week 4 — Free roaming

Allow free access only when both cats are relaxed. Maintain separate food, water, and litter stations for at least another month.

Warning signs

Hissing is normal. Stop and back up a step if you see flattened ears, swatting with claws, prolonged stalking, or one cat refusing to eat.