The term “infant” is from the Latin infans, meaning “unable to speak” and typically refers to the ages from 1-12 months. A “newborn” usually refers to an infant in the first 28 days of life.
The word “baby” may come from a baby’s babbling, as in “ba-ba-ba-ba.”
Newborns are more likely to turn their heads to the right than to the left.
Adults have 206 bones. When babies are born, they have 300. Their bones fuse as they grow, resulting in fewer bones as adults.
A newborn urinates about every 20 minutes and then roughly every hour at 6 months.
Newborns can scream and holler for what they want or need, but they can’t technically cry. Tears can’t actually be created or released until about three weeks in.
A baby can recognize the smell and voice of its mother at birth. It takes a few weeks before a baby can see the difference between its mother and other adults.
At birth, babies have no kneecaps. Kneecaps do not develop completely until after six months.
Babies typically prefer a female voice over a male voice, which may explain why people raise the pitch of their voice when talking to babies, otherwise known as “motherese.”
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