it depends on the baby. some grow faster than others
Knee caps appear when a child reaches 2 to 6 years of age.
I know a scientific answer and babies start being able to start developing moveable knee caps but when they are born they have non active kneecaps they have active kneecaps between 2 and 4 that is why that babays start to walk at theese ages.
Babies typically develop neck control around 2 to 4 months of age.
"Probably teeth" ^ this is wrong. Babies start to get their teeth before they even turn 1 year old, and its not that they are born with out their teeth. Their teeth are in their gums but haven't yet pushed their way out. I believe this person is referring to the fact that some people think that babies are born without knee caps and don't get them until around that age. This is wrong as well. Babies are born with knee caps, however they haven't ossified yet. A baby's kneecaps start off as cartilage and eventually ossify, becoming bone.
Babies typically develop self-recognition in the mirror around 18 to 24 months of age.
Babies typically begin to develop empathy towards others around 6 to 12 months of age.
Babies develop self-awareness through interactions with their caregivers and by exploring their own bodies. They can recognize themselves in the mirror at around 18 months of age, which shows the beginning of self-awareness.
Babies can develop cancer at a young age due to genetic mutations that occur during fetal development or because their immune systems are not fully developed to fight off abnormal cells.
Babies typically start kissing their parents around 6 to 12 months of age as they develop social and emotional skills.
Babies typically start to kiss their caregivers around 6 to 12 months of age as they develop social and emotional skills.
Babies can begin to play independently around 6 to 12 months of age, as they develop the ability to entertain themselves for short periods of time.
babies do not have kneecaps until they are about two years of age. They do have cartlidge in the space until then so that their legs don't hyperextend, but the actual bone itself to make a kneecap does not form until way later. You can look this answer up, or even ask a doctor. same answer but a little more info: a baby's kneecap is made of cartlidge (see above) and the cartlidge grows in the 4th month of pregnancy