At a glance Birth: Newborn kittens weigh between 90 – 100 grams, the umbilical cord is attached, eyes and ears are closed. 0 – 3 days: The umbilical cord falls off on the third day, eyes are still shut. 7 – 10 days: All kittens are born with blue eyes which begin to open from day seven. 2 – 3 weeks: The kitten begins to stand, the eyes and ears open. 4 weeks: The kitten starts playing and exploring her environment. 5 weeks: Kittens are confident on their feet by this age. 6 + weeks: The kittens are extremely active.

Teeth

Baby teeth:

• 2 weeks: Deciduous incisors (the small teeth at the front) begin to come in.
• 3 – 4 weeks: Deciduous canines (the long, pointy teeth next to the front teeth) begin to come in.
• 4 – 6 weeks: Deciduous pre-molars (also known as bicuspids, these are the teeth located between the canine and molar teeth)  begin to come in.
• 8 weeks: All baby teeth have come in.

Adult teeth:

• 12 – 16 weeks: Incisors come in.
• 4 – 6 months: Canines, premolars, and molars come in.
• 7 months: All adult teeth are fully developed.

Eyes

• 0-2 weeks: Eyes are sealed shut at birth.
• 2 weeks: Eyes begin to open, eyesight is not developed yet.
• 5 weeks: Eyesight is fully developed.
• 6-8 weeks: Eyes start to change colour.

Ears

• 0-3 weeks: Ears are folded, cats are deaf at birth.
• 3 weeks: Ears prick up, hearing is well developed.

Weight

• Birth: Kittens weigh 90-100 grams.
• 1 week: Kittens have doubled their weight.
• 2 weeks: Weight is now 300g.
• 4 weeks: The kitten should now weigh 500 grams (18 oz).

Activity

• 0-2 weeks: Kittens nurse and sleep.
• 3 weeks: Some kittens are starting to stand.
• 4 weeks: Kittens are becoming more active.