Fostering Kittens: Tips, Prep, and What to Expect
Each year, from spring through fall, shelters and rescue groups across the country brace for kitten season — a time when they’re inundated with litters of fragile, newborn kittens. Many of these babies are too young for adoption, and the sheer volume can quickly overwhelm shelter resources. That’s where foster volunteers make a life-saving difference.
What is kitten fostering?
Kitten fostering is the temporary care of young kittens until they’re old enough, healthy enough, and socialized enough to be adopted into permanent homes. Fosters provide a safe, nurturing environment where kittens can grow, learn, and thrive outside the shelter — giving them the best possible start in life.
How is kitten fostering different—or more involved—than cat fostering?
Fostering kittens tends to be more time-intensive than fostering adult cats. Unlike most adult cats, kittens — especially very young ones — often need round-the-clock care. This can include:
- Bottle-feeding every few hours for neonatal kittens who aren’t yet weaned
- Stimulating kittens to urinate and defecate if they’re too young to do it on their own
- Monitoring their weight daily to ensure steady, healthy growth
- Guiding their transition to solid food as they mature
- Socializing them through gentle handling, play, and positive exposure to people and household sounds
Adult cats, by contrast, usually require only basic daily care, enrichment, and affection.
How to foster kittens
Are you interested in fostering kittens but don’t know where to start? Here’s how to set yourself up for a successful experience — from day one.
Connecting with a shelter or rescue
Begin by reaching out to local shelters or rescues. Many organizations, including FurPetVo, have well-established foster programs. They’ll walk you through their application process, provide training, and match you with kittens based on your home environment and availability.
Determining your commitment
Foster kittens vary widely in age and needs — so the level of care required differs significantly. Bottle babies (unweaned kittens) need feedings every two to four hours, including overnight. Older kittens may only need meals, playtime, and socialization. Be honest about your schedule and capacity when speaking with FurPetVo’s foster coordinators — that way, you’ll be matched with kittens whose needs align with your lifestyle.
Gathering necessary supplies
Before your kittens arrive, gather essential supplies. Most rescues — including FurPetVo — provide or reimburse for core items, but it’s helpful to confirm what’s covered. Rescues always appreciate fosters who contribute supplies when possible. You’ll likely need:
- Kitten formula (for bottle babies) and age-appropriate wet or dry food (for older kittens)
- Bottles and nipples — FurPetVo recommends soft, kitten-safe options like the FurPetVo Comfort Nipple
- Litter boxes with low sides and kitten-safe litter (pine pellets or unscented clay)
- Soft bedding, blankets, and towels
- A secure sleeping area — such as a cat carrier with the door removed or a cardboard box turned on its side
- A safe heating source, like the FurPetVo WarmNest microwaveable heating pad
- Kitten-safe toys and a scratching post
- Food and water bowls
- Cleaning supplies for accidents and hygiene
Setting up your foster space
Prepare a small, quiet “safe room” in your home — a spare bedroom or bathroom works perfectly. If space is limited, a secure playpen is also suitable. Keep kittens completely separated from other pets, and thoroughly kitten-proof the area: remove small objects they could swallow, seal off gaps where they might get stuck, and eliminate any hazards.
Because kittens can’t regulate their body temperature, the space must be warm, draft-free, and never located in garages, outdoor enclosures, or areas with exterior access. Choose a spot that’s easy to clean — accidents are part of the learning process, and quick cleanup helps keep everyone healthy.
Bringing home the kittens
When you bring your foster kittens home, place them directly into their designated safe space. Keep noise and activity to a minimum, and give them time to settle in quietly. Avoid overwhelming them with too much attention right away — let them acclimate at their own pace.
Caring for foster kittens
Once settled, your role shifts to consistent daily care: feeding, socialization, health monitoring, and gentle support. As Samantha Bell, feline behavior expert at FurPetVo, explains: “The goal is to re-create the mother cat experience — warm, soft, calm, and full of comfort.”
Feeding foster kittens
Feeding routines depend on age. Neonatal kittens require bottle feeding around the clock — typically every two to four hours. “Use only kitten-specific milk-replacement formula,” Bell advises. “Never feed cow’s milk. It lacks vital nutrients and can cause severe, even life-threatening gastrointestinal distress.”
At four to five weeks old, begin introducing a soft slurry of wet food and formula. Gradually thicken the mixture over several days as they gain confidence eating solids. Weigh each kitten daily during this phase to track healthy, consistent growth.
Stimulating pee and poop
Young kittens can’t eliminate on their own — their mother normally stimulates them by licking. You’ll replicate this using a warm, damp paper towel or unscented baby wipe, gently massaging their genital and anal areas after each feeding. Most kittens won’t eliminate every time; once per day or every other day is typical.
Socializing foster kittens
Socialization is essential for raising confident, adoptable kittens. Spend time each day petting, talking to, and playing with them. Introduce everyday sounds — like vacuum cleaners, doorbells, or children’s voices — at low volumes and gradually increase exposure. If a kitten seems shy or fearful, go slowly and never force interaction. Patience, consistency, and positive reinforcement build lasting trust.
Recognizing common health issues
Even seemingly healthy kittens can decline rapidly. Watch closely for early warning signs of illness, including:
- Frequent, distressed crying
- Restlessness or lethargy
- Weakness or inability to stand or nurse
- Cold ears, paws, or body (signs of hypothermia)
- Diarrhea or unusually pale or bluish gums
- Dehydration (check by gently pinching the skin at the scruff — it should snap back quickly)
- Shallow, labored, or noisy breathing
If you notice anything concerning, contact FurPetVo immediately. Their veterinary partners offer 24/7 support for fosters, and you’ll coordinate all wellness visits — including vaccinations and deworming — through the organization.
Common challenges in kitten fostering
Fostering kittens is deeply rewarding — but it’s not without emotional and practical demands. Understanding these challenges helps you prepare and decide whether it’s the right fit for you.
- Time commitment: Caring for neonatal kittens requires frequent feedings — including overnight — plus cleaning, stimulation, and daily health checks. If your schedule is tight, ask FurPetVo to match you with older, more independent kittens.
- Kitten loss: Despite your best efforts, some orphaned or ill kittens may not survive. This can be heartbreaking. Remember: your love, warmth, and attentive care — even for just a few days — gives them dignity, comfort, and their best chance at life. FurPetVo offers compassionate support and guidance for fosters navigating loss.
