3-4 Weeks Old:

The Wide-eyed Stage

This transitional week brings major milestones like improved vision and the first tiny teeth.

You Should Know:

• Kittens’ vision improves rapidly during this week, and they become very curious about the world around them. By about 3.5 weeks they can make eye contact and observe their immediate surroundings with wide blue eyes, but they aren’t yet coordinated enough to reach out and bat at toys.

• At this age, kittens develop their first tiny teeth—the incisors at the front of the mouth. These teeth are not for eating solid food; kittens this age are still 100% dependent on nursing with mom or bottle feeding.

• Because their immune systems are still developing, kittens this age should be handled only with clean hands and protected from other animals and potential sources of infection.

• Whenever possible, kittens should stay with their mother. If you find a kitten outdoors, make every effort to keep the family together.

• If a kitten this age is truly orphaned, they will need special support like bottle feeding and a gentle heat source.

Week 3-4 Physical Attributes

Eyes:

• Blue irises

• Vision rapidly improving; can make eye contact and observe within a few feet

Ears:

• Ears upright or floppy in appearance

• Rounded with a small point

Teeth:

• At 3 weeks: tiny incisors emerge at the front of the mouth; these teeth may appear as small white points along the gumline

• At 4 weeks: canine teeth emerge, which appear as tiny fangs

Claws:

• Retracted when relaxed

Typical weight:

• 350-450g

Healthy weight gain:

• At least 10g per day

Essential Supplies for a 3-4 Week Old Kitten

• Kitten bottle │ 2 pack │ 24 pack

• Kitten-safe nipple │2 pack│10 pack

• Kitten formula │12oz│4.5lb

• Blender bottle for mixing

• Gram scale for weighing

• Kitten-safe heat disk

• Baby blankets

• Cozy hut and/or soft bed

• Mesh playpen or plastic panel playpen

• Shallow litter box with kitten-safe litter

How to Set Up Your Space for a 3-4 Week Old Kitten

At 3 weeks old, kittens are curious and wanting to explore slightly beyond their bed/nest. They are much too small to freely roam a room, but a contained playpen offers an ideal balance of safety and space to walk.

In a playpen:

• The ideal setup is a mesh playpen or plastic panel playpen.

• Place a kitten-safe heat source in one corner, covered with a soft baby blanket.

• Provide a cozy hut and/or a soft bed.

• Provide a shallow litter box (a cardboard cat food tray works well) with kitten-safe litter.

In a bathroom:

• A small bathroom can be appropriate for kittens this age, but be careful to ensure it is kitten-proofed. Keep the toilet lid shut and tuck in shower curtains so that they cannot be climbed. Ensure cabinets are closed and toxic chemicals are not accessible. Line the floor with blankets as tile can be too cold for kittens. Set up the space with all supplies listed above.

In an incubator:

• An incubator is generally too small for this developmental stage, as they don’t allow the kitten to practice walking, briefly exploring and using the litter box. Only use an incubator at this age if the kitten is sick and needs extra rest and thermal support. If healthy, use a playpen and simply offer a kitten-safe heat disk.

With a mama:

• An ideal setup is a nesting box in a closed room free of hazards and other animals.

• Keep the space warm and clean.

• Ensure the mother has easy access to fresh food, water, and a litter box nearby. Add a small shallow litter box for the kitten.

Care Schedule: Every 4-5 Hours

At 3-4 weeks of age, kittens can go slightly longer between feedings, though they still require frequent meals because their stomach capacity remains small and their bodies are growing rapidly. In a natural setting, a mother cat would continue nursing her kittens many times throughout the day and night.

Kittens at this age are developing the neuromuscular signaling needed to eliminate waste on their own. You’ll need to watch closely to see if they are using the litter box. If not, continue to stimulate them at each meal until they do.

Most kittens this age will eat about 14-18 ml of formula per feeding, typically every 4-5 hours. These regular feedings keep the kitten hydrated, fuel their high metabolism, and ensure healthy development.

Care Routine for a 3-4 Week Old Kitten

1. Wash your hands or put on clean gloves.

   Neonatal kittens have immature immune systems and should be handled with clean hands.

2. Stimulate the kitten to go to the bathroom if needed.

   You can skip this step once the kitten is clearly using the litter box to both urinate and defecate.

3. Bottle feed the kitten.

   Allow the kitten to bottle feed at her own pace.

4. Weigh the kitten.

   Record the weight in grams, along with the time of feeding. Healthy kittens should gain weight every day.

5. Clean the kitten.

   Use a baby wipe or warm cloth to gently clean the kitten’s face and bottom if needed.

6. Return the kitten to her bed or hut.

   Ensure the kitten is placed near the warm zone. At this age, it’s normal if they choose to explore a little before they go back to sleep.

7. Set an alarm for the next feeding in 4-5 hours.

   Young kittens require around-the-clock care, so setting alarms helps maintain a consistent feeding schedule.

Additional Resources