How should I introduce a new cat to my resident cat?

Prepare two complete spaces before the first meeting

FelineVMA advises a quiet transition room that can be secured against unsupervised interaction. It needs the new cat's own essentials rather than borrowed access to the resident cat's resources.

Spread resources rather than placing food, water, litter and resting places in one congested corner. The purpose is to reduce competition and give each cat choices, not to guarantee friendship.

Keep the familiar routines and resting areas of the resident cat intact where practical. A newcomer should not arrive by suddenly removing the resident cat's only preferred resource.

Sources: FelineVMA: How to Introduce a New Cat to Other Cats in Your Home

Use behavior—not elapsed days—as the gate

The FelineVMA handout says introductions may take days, months or longer and advises against moving forward until each cat is comfortable with the current step. That makes a fixed seven-day promise inappropriate.

Start with settling, then scent items, activity on opposite sides of a closed door, supervised exploration at different times, and visual access. Each step is a separate observation.

Hissing, growling, pacing, avoidance, litter changes or a sharp change in normal behavior are reasons to stop and create more distance—not reasons to discipline the cat.

Sources: FelineVMA: How to Introduce a New Cat to Other Cats in Your Home · FelineVMA: 2024 Intercat Tension Guidelines

A fictional introduction log without a deadline

Fictional example: new cat Juniper explores her transition room and eats normally. Resident cat Moss sniffs a towel from several feet away, then leaves. The owner records both choices without arranging a face-to-face meeting.

On the next attempt Moss growls at the closed door. The owner ends the session and moves Moss's play activity farther away. The record says 'paused at closed-door step'; it does not label either cat aggressive.

This example illustrates a decision boundary. It is not a tested protocol, a promise of compatibility or a substitute for individual veterinary or behavior advice.

Plan how to end a tense moment before it happens

Keep a large towel, cushion or piece of cardboard nearby to block visual contact if tension rises. FelineVMA specifically cautions against picking up cats during a tense moment because redirected behavior can injure a nearby person or animal.

Close a barrier and return each cat to a complete space. Do not chase, corner or stage another attempt immediately.

If conflict persists or normal eating, toileting or rest changes, contact the veterinary team and describe the sequence rather than sending only a dramatic clip.

Sources: FelineVMA: How to Introduce a New Cat to Other Cats in Your Home · FelineVMA: 2024 Intercat Tension Guidelines

Record one accepted step and one reason to pause

A useful note names the setup, distance, barrier, each cat's behavior and who ended the session. Avoid global labels such as dominant, jealous or friendly.

My Pet Notes stores the draft locally in this browser. It does not monitor the cats, contact a professional or decide when to progress.

Keep the next step blank until the current observations support it.

• Each cat has complete separated resources.
• The current stage and barrier are named.
• Both cats' behavior is recorded separately.
• The stop signal changes the plan.