Newborns cry without tears as their tear ducts only keep eyes moist. Tears appear at 2-3 weeks old.
Babies are born with around 300 bones, which fuse over time, unlike adults who have 206.
Newborns can immediately recognize their mother's voice and even remember prenatal sounds.
Infants have a strong sense of smell, identifying their mother's scent within days of birth.
Babies have a natural swimming reflex and can hold their breath in water, fading by 6 months.
Newborns taste sweet, bitter, and sour but not salt due to developing kidneys and taste buds.
Newborns sleep 16-18 hours daily in short cycles, waking often to feed, with patterns stabilizing over time.