Cat Articles

Kitten Development – Growth and Milestones Weeks 1-8

Kitten milestones at a glance

  • Birth to week 1 – Kittens are born with eyes closed and ears folded. They weigh between 90-100 grams. The umbilical cord stump falls off around day three. By the end of the first week, the kitten has doubled his weight.
  • Week 2 – Eyes begin to open. First baby teeth erupt.
  • Week 3 – Ears are now erect. Some kittens begin exploring.
  • Week 4 – Canine teeth (fangs) have erupted. Hearing is well developed.
  • Week 5 – Eyesight is now fully developed. Kittens begin to try solid food.
  • Weeks 6 to 8 – Eye colour begins to change. Kittens are now extremely active. They should receive their first vaccination at six weeks.

 

Week 1   Week 2   Week 3   Week 4   Week 5   Weeks 6 to 8

Birth to week 1

Newborn kitten

Growth

  • Eyes and ears – Kittens are born blind and deaf. Their eyes are closed and their ears folded down.
  • Teeth – Kittens are born without teeth.
  • Weight – Newborn kittens weigh between 90-100 grams (3 ounces) by the end of the first week they should have doubled their weight to 200 grams (6 ounces).
  • Newborn kittens are unable to regulate their body temperatures and rely on mum to keep warm. The kitten’s environment must be kept at a constant temperature to avoid hypothermia or hyperthermia.
  • The umbilical cord remains attached for the first three days.
  • Toileting is stimulated by the mother. After her kittens have fed, she will lick their bellies and genital areas, eating any feces and urine.
  • At birth, they usually weigh around 100g.

Development:

  • In the first week of life, kittens do little more than sleep and eat. When they are awake, they stay close to the mother. The mother stimulates urination and defecation in her kittens by licking them.

While it is important to keep an eye on the mother and her kittens, too much interference may result in the mother cat moving her kittens to another location.

Week 2


Image Helen Haden, Flickr

Growth

  • Eyes – By the second week, their eyes are beginning to open (although their vision is not very good at this stage). Do not force their eyes open, as it could result in damage. Young kittens are vulnerable to eye infections, so keep a watch for any signs of infection, such as crustiness or white/yellow secretions. All kittens have blue eyes at this stage. The kitten’s pupils don’t dilate and contract efficiently, so bright light should be avoided.
  • Teeth – The baby (deciduous) incisors erupt. These are the small teeth at the front of the mouth.
  • Ears – The ears are still folded at this age.
  • Weight gain is around seven to ten grams a day. By the end of the second week, they should weigh approximately 300 grams (10.5 ounces).
  • The sense of smell is developing. They will often have a preference for a particular nipple.

Parasites

  • Kittens should be wormed at two weeks

Week 3

Week three
Image WJ van den Eijkhof, Flickr

Growth

  • Ears – By three weeks, their ears will be erect and their sense of hearing is developing.
  • It is around the three-week mark that kittens begin to shakily move about.
  • The sense of smell is well developed.
  • The kittens may defecate on their own at this stage, the mother will still clean up their waste.

Milestones

  • Some kittens will try to walk and explore.
  • By three weeks, the kitten is becoming more aware of his littermates.
  • Some kittens may begin to purr.

Week 4

Week four
Image Fuzzy Gerdes, Flickr

Growth

  • Teeth – The deciduous canine (fangs) teeth have erupted.
  • The sense of smell is fully mature.
  • Weight – The kitten should now weigh approximately 500 grams (18 ounces).
  • Their eyesight is improving, although it will be a few more weeks before it is fully developed. The sense of hearing is now well developed.

Milestones

  • The kittens are becoming more and more active and are interacting with their littermates. They may attempt to explore outside the confines of their kittening box.
  • The mother is still grooming her offspring, but they are also able to groom themselves.
  • It is at this time that the mother will begin to leave her kittens for short periods of time.
  • At this stage, you can provide a small bowl of water for kittens to drink from.

Parasites

  • Kittens should receive their second dose of worming medication.

Week 5

Week five
Image WJ van den Eijkhof, Flickr

Growth

  • Eyes – The sight is fully developed at five weeks.

Milestones

  • The weaning process can begin around five weeks of age. Start out slowly by mixing canned or dry cat food in with some kitten formula to make baby food (check the ingredients to make sure the food contains no onion, as this is toxic to cats). Not all kittens will take to food immediately, so patience is important. Introduce a small amount, initially. You can introduce solids either by placing a small amount of food on your finger or in a cat bowl. Kittens should be provided with a shallow bowl to eat from.
  • Although they may have begun to wean, kittens are still regularly nursing from their mother.
  • Kittens are much more graceful on their feet at this stage and are exploring a lot more, often stalking and pouncing on their littermates.
  • They may start to use the litter tray, although you will likely still find some accidents. Make sure that the bedding is easily washable, so you can ensure the area remains clean. Provide them with a small litter tray, and make sure it has litter which is safe for young kittens to use (and possibly eat).

6 weeks

Week six
Image mrccos, Flickr

Seven weeks

Week seven
Image Chris Favero, Flickr

Eight weeks

Eight week old kitten
Image Vicki Burton, Flickr

Growth

  • Eyes – The eyes start to change colour from 6-8 weeks.
  • Premolars have emerged.

Milestones

  • The kittens are extremely active. The mother will have longer periods on her own.
  • The role of the human is to take an active part in the socialisation process without intruding, especially in the very early days. Take the time to not only play with your kitten but also to offer plenty of cuddles and familiarise it with being handled, in general. This includes frequently touching the paws, ears, and mouth, which will make basic health inspections, medicating, and claw trimming easier, as the kitten is brought up to accept this.
  • At this stage, kittens should be eating four, small meals a day and, by eight weeks, should be eating mostly solids. They should have almost all of their baby teeth by now.

Vaccinations/parasites

  • Kittens receive their first vaccinations at 6 weeks of age.
  • Kittens should receive their third dose of worming medication.

Footnote

Cats remain kittens for longer than 8 weeks, the aim of this article was to cover the early stages of kitten development.

This is a guide only, as all animals work to their own schedules, however this does provide you with a guideline as to what should be happening and when.

It is important to keep records of weight, kittens should gain weight steadily. If they do not, then veterinary attention should be sought quickly. Also, be on the lookout for signs of sickness in your kitten. These could include loss of appetite, sleeping alone (at a very young age), rejection from the mother, vomiting, diarrhea, weakness, discharge from the mouth, eyes, anus etc. If you are at all worried, seek veterinary advice.