What it means to foster a cat
Fostering means giving a cat or kitten a temporary home, usually on behalf of a shelter or rescue group, until the animal is ready for adoption or has recovered from something such as illness, surgery (see spay aftercare), or the stress of shelter life. The rescue typically stays responsible for the cat. You provide daily care, patience, and a calm place to live.
Foster homes help shelters free up space, give shy or unwell cats a quieter environment, and let rescues learn how a cat behaves in a real home, which can help match the cat with an adopter.
Is fostering right for you?
Fostering is rewarding, but it is a commitment. It helps to think honestly about:
- Time. Cats need daily feeding, litter cleaning, play, and attention. Some need medication or extra monitoring. Young kittens can need care around the clock.
- Other pets and people. Everyone in your home should be on board, and resident pets may need protecting from illness or stress.
- Your living situation. If you rent, check your lease and landlord’s rules first.
- Emotions. Becoming attached is normal. Fostering is meant to be temporary, so it helps to prepare for the goodbye.
- Flexibility. Plans can change, and an unexpected vet visit or a longer stay than expected is common.
How to get started
Most people begin by contacting a local shelter or rescue organization. Many have an online foster application, and some hold an orientation. Useful questions to ask include:
- What types of cats do you need fosters for (adults, kittens, mothers with litters, medical cases)?
- How long are placements usually?
- Who pays for food, litter, and veterinary care?
- Which vet clinic do I use, and who do I call in an emergency?
- What happens if I cannot continue fostering?
- How are adopters found, and can I help with that?
- If I want to adopt my foster, is that allowed?
Being clear about your experience and limits helps the rescue place the right cat with you.
How much does it cost?
Costs vary a lot depending on the organization. Many rescues supply or reimburse food, litter, and veterinary care, and some lend items such as carriers or crates. Others expect fosters to cover everyday costs. Ask for the specifics before you commit, and get approval from the rescue before any non-emergency veterinary spending. Your own costs may include extra litter, toys, cleaning supplies, and higher utility use, along with your time.
Setting up a foster space
A separate, quiet room such as a spare bedroom or bathroom is a good starting point. Many rescues recommend it for several reasons: it lets the cat settle gradually, it protects your resident pets, and it makes it easier to monitor appetite and litter box habits.
Basics to have ready:
- Litter box and litter (placed away from food and water)
- Food and water bowls
- A secure carrier for vet trips
- A bed or blanket and a hiding spot such as a covered box
- A scratching surface and a few toys
- A way to keep windows, vents, and gaps secure so the cat cannot escape or get stuck
Check the space for hazards, including cords, small items a kitten could swallow, and plants that may be toxic to cats. If you are unsure about a plant, check with your veterinarian.
The first days: the 3-3-3 pattern
Rescue groups often describe the “3-3-3 rule” as a rough guide to how an adopted or fostered cat may adjust: about 3 days to feel overwhelmed and perhaps hide, about 3 weeks to start learning the routine and showing personality, and about 3 months to feel at home. It is not a strict timeline. Some cats relax in a day, and others take much longer.
In the early days:
- Let the cat come out of the carrier on its own time.
- Keep the room quiet and your movements calm.
- Sit near the cat without forcing contact, and let it approach you.
- Keep food, litter, and routines consistent.
- Do not worry if the cat hides or eats little at first, but contact the rescue if the cat is not eating (see how to get a cat to eat), seems unwell, or shows concerning signs.
Fostering with resident pets
Many rescues ask that foster cats be kept separate from resident pets, at least at first, because new cats can carry infections or parasites, and because introductions can be stressful. Your rescue may have specific guidance, and your own veterinarian can advise on vaccinations and protection for your pets.
People often ask which genders of cats get along best. There is no reliable rule. Age, personality, early socialization, and a slow introduction matter more than sex. Cats of similar energy levels often do better together than very different ones. Swapping bedding for scent exchange and short, supervised meetings are common ways to begin. Our guide to how to stop a cat from biting may also help if play with a new cat gets rough.
Health and hygiene basics
- Wash your hands after handling the foster and cleaning the litter box.
- Clean and disinfect the space between fosters as the rescue advises.
- Watch for changes in appetite, energy, stool, breathing, eyes, or skin, and report them promptly.
- Give medications exactly as directed.
- Keep up with litter cleaning. If anyone in the household is pregnant or has a weakened immune system, see our explanation of cat toxoplasmosis and ask a doctor for personal advice.
- If anyone in the home is sensitive to cats, read about whether you can develop a cat allergy.
Fostering kittens
Kittens are in high demand for fosters, but they can be more work. Very young kittens without a mother may need bottle feeding at regular intervals, help staying warm, and help with toileting. This is a skilled task, so ask the rescue for training and supplies, and do not start without veterinary or rescue guidance.
Knowing a kitten’s development helps. For example, you can read about when kittens open their eyes and what is normal for newborns. Young kittens can become ill quickly, so contact the rescue or a veterinarian early if a kitten is not feeding well, seems cold or weak, or has eye or breathing issues.
Helping your foster get adopted and saying goodbye
You often know the cat best, so you can help by:
- Sharing details about personality, likes, and dislikes
- Taking clear photos and writing an honest description
- Telling the rescue about quirks such as nervousness with visitors
- Following the rescue’s process for meeting potential adopters
Saying goodbye can be hard. Many fosters find it helps to remember that giving up a cat to a new home also makes room to help the next one. If you do fall in love, ask your rescue about its policy on foster adoptions.
FAQ
What does it mean to foster a cat?
It means caring for a cat temporarily in your home, usually for a shelter or rescue, until the cat is adopted or ready to return.
What is the 3-3-3 rule of cats?
It is a rough guide to adjustment: roughly 3 days to decompress, 3 weeks to learn the routine, and 3 months to feel at home. Individual cats vary.
How much money is it to foster a cat?
It depends on the rescue. Some cover most costs, others cover only certain items. Ask what is provided before you start.
Which genders of cats get along best?
There is no firm rule. Personality, age, and careful introductions matter more than gender.