New Kitten First Week: The Complete Setup Checklist

The first week with a new kitten shapes the cat you will have for the next fifteen years. Kittens that get a calm, structured introduction become confident adults; kittens that get dropped into a busy household without a base camp often develop anxiety that shows up as hiding, over-grooming, or litter box problems for years.

This checklist walks through the first seven days in order — the safe room, the supplies, the vet visit, and the expansion schedule.

Before the Kitten Arrives: The Safe Room

Pick one small, quiet room — a bedroom or bathroom works. The kitten lives there for the first several days:

• Litter box with unscented clumping litter, low sides for easy entry
• Food and water bowls, separated, away from the litter box
• A hiding spot — a covered bed, a box with a hole, or a cave. Prey animals need somewhere to retreat, and a kitten without one stays stressed
• Toys — a wand toy, small balls, and one soft toy for comfort
• A bed or blanket with a scent item from the previous home if available
• Kitten-proof the room: no cords the kitten can chew, no small swallowable objects, no toxic plants, no gaps behind furniture where a kitten can hide and get stuck

The safe room is not confinement as punishment — it is a base the kitten can learn and feel secure in before facing the whole house.

Day 1: Leave Them Alone

The hardest part for new owners: on day one, ignore the kitten:

• Open the carrier in the safe room and let the kitten come out on their own.
• Do not chase, do not force cuddles, do not invite friends over to meet them.
• Sit in the room quietly and read or work — let the kitten investigate you at their pace.
• Food, water, and litter box are all in the room, so the kitten has everything.
• Hiding under the bed the entire day is normal and expected. Do not pull them out.

The kitten is processing a massive change. Everything is new — smells, sounds, people. Quiet presence builds trust faster than attention.

Days 2-3: Food, Play, and Routine

• Feed what they were eating before. A new home plus new food equals digestive upset. If you want to change foods, transition over seven to ten days.
• Kittens under six months eat three to four times a day — kitten-specific food, since adult formulas lack the calories and nutrients growing kittens need.
• Start short play sessions — five minutes with a wand toy, a few times a day. Play builds confidence and burns the energy that otherwise becomes night craziness.
• Keep the schedule predictable: feeding, play, and quiet time at roughly the same hours. Predictability calms kittens.

The First Vet Visit (Days 1-3)

Book this before the kitten arrives, and go within the first few days:

• Full examination — weight, temperature, eyes, ears, heart, lungs, abdomen
• Fecal test for parasites — most kittens arrive with worms, and treatment is routine
• Vaccination schedule — the FVRCP series starts around six to eight weeks, with boosters every three to four weeks
• FeLV/FIV testing — especially for kittens from unknown backgrounds
• Spay/neuter timing — typically around four to six months, discussed at this visit

Bring a stool sample if you can, and a list of what the kitten has been eating and any records from the previous home or shelter.

Days 4-5: Expand the Territory

Once the kitten is eating, playing, and using the box reliably:

• Open the safe room door and let the kitten explore at their own pace.
• One room at a time if the house is large — overwhelming a kitten with the whole house at once produces hiding.
• Add a second litter box when the territory expands, especially on another floor.
• Kitten-proof the new areas: cords, small objects, toxic plants, and recliner chairs — the mechanisms can trap kittens.

Days 6-7: Handling and Socialization

The socialization window closes around nine to twelve weeks — everything you do now compounds for life:

• Handle gently and briefly: paws, ears, mouth — the handling that makes future nail trims and vet visits easier.
• Introduce new experiences slowly: vacuum sounds, visitors, other pets — one at a time, with the kitten able to retreat to the safe room.
• Other pets: no face-to-face meetings yet. Scent swapping through closed doors first, visual contact through a barrier after.
• Children: supervised, calm, short interactions. Teach them that the kitten’s hiding spot is off-limits.

Warning Signs in Week One

Kittens are fragile. These need a vet quickly:

• Not eating for more than 12 hours — kittens cannot fast safely; low blood sugar is dangerous
• Diarrhea lasting more than a day — parasites, diet change, or infection; dehydration is fast in kittens
• Lethargy, hiding more than interacting, or crying
• Sneezing, discharge from eyes or nose — upper respiratory infections are common and need treatment
• Straining in the litter box — same-day visit

Supplies Checklist

• Kitten food (what they were eating) plus a measured transition food
• Two shallow food and water bowls — kittens do better with wide, low dishes
• Litter box with low sides, unscented clumping litter, scoop
• Carrier for vet visits
• Scratching post — start early so the sofa survives
• Wand toy, small balls, one soft comfort toy
• Cat bed or blanket
• Nail clippers (start handling paws now for later)
• Enzymatic cleaner — for the accidents that will happen

Frequently Asked Questions

My kitten hides and will not come out. Is something wrong?

Usually not — hiding for the first day or two is normal. Offer food and quiet company, and let the kitten emerge on their own. If hiding continues past several days with no eating or playing, call the vet.

How soon can my kitten meet my other cat?

Scent swapping immediately through a closed door; visual contact through a barrier after several days; supervised meetings after a week or more if both stay calm. The existing cat sets the pace — their stress matters too.

Should I let my kitten sleep in my bed?

Eventually, if you want that — but not in week one. The safe room with the door closed at night is safer (no accidents on you, no risk of rolling over) and builds the base-camp security.

When do kittens calm down?

The night-crazy phase peaks around eight to twelve weeks and fades by a year. Structured play before bedtime helps enormously — a tired kitten sleeps.

The Bottom Line

One quiet room, full of everything, for the first week — with you present but not pushy. Leave the kitten alone on day one, start short play and predictable feeding on days two and three, get the vet visit done early, expand the territory on days four and five, and begin gentle handling and socialization by the end of the week. Watch for appetite loss, diarrhea, and respiratory signs — kittens decompensate fast. Do these things and you have built the confident foundation the next fifteen years rest on.