If you have personal pets who are cats, you’ll need to introduce them to the foster cat. Even if you know the cat you are fostering is good with other cats, you’ll want to do the introductions gradually. So, before bringing your foster cat home, create a separate “territory” for her. This area should be equipped with food, water, a scratching post, a litter box, access to natural sunlight, and comfortable resting places. Your other cats should have their own separate territory.

Over a one- to two-week period, let the cats smell each other through a closed door, but don’t allow them contact with one another. Exchanging blankets or towels between the areas will help them get used to each other’s smells. The next step is to allow them to see each other through a baby gate or a door that is propped open two inches. If the cats are interested in each other and seem comfortable, allow them to meet. Open the door to the rooms between the cats and observe them closely. If any
cat shows signs of significant stress or aggression, separate them again and introduce them more slowly.

It’s a good idea to have a broom or squirt bottle on hand to deter any fights. Never try to separate cats who are fighting with your hands or body parts. For more details on cat introductions, read “Introducing a New Cat.”