Infant
An infant or baby was a very young offspring of living beings, such as Humans, Vulcans, primates, or Capellan power-cats. Changelings referred to their infants as "newly formed". () 

While the term "fetus" applied to an unborn baby, the term "newborn" – or in some cases hatchling – generally described the first days of a baby's life following birth. Contrary to this, The Doctor stated that the unborn future-Naomi Wildman was "female, half-Ktarian, as a matter of fact, which should nearly double the infant’s gestation period." () Pandronians referred to their infants as "egglings". ()

The proper way to hold a newborn baby was to support its back with one arm, and its head with the other hand. Leonard McCoy demonstrated this technique to Spock after he was given Eleen's baby to hold, but Spock preferred not to try it. McCoy also corrected Eleen's hold on the child, then spoke to the child in what James T. Kirk termed "an obscure Earth dialect" (baby talk). ()

The term "newborn" could also be used to refer to anything that was newly formed. In 2285, Kirk referred to the  planet as a newborn planet. () In August of 2151, Travis Mayweather joked that the crew complement of twenty-three of the  freighter  would not count newborn babies. ()

Characteristics 
Infants were known for being squirmy and easily controlled. (; )

Spock compared the experience of his telepathic contact with the Lactrans as having learned "about as much as a mother learns from a six-month-old infant." ()

Deanna Troi compared the newly formed emergent lifeform aboard the  to an infant, "acting on impulse, trying to figure itself out as it goes. The only source of experience it can draw on is ours though." ()

Development 

On the negative universe planet , where time flowed in reverse, an individual was born at an old age and died in infancy. Following their experience in that universe, the crew of the  began to reverse in age, with much of the crew reaching infancy. ()

Due to being genetically-engineered, Jem'Hadar passed through infancy in a matter of hours. In most other respects, Jem'Hadar infants had the same limited abilities found in infants of other races. ()

A specific future Borg drone, named One, also developed at an advanced rate, growing from infant to adult in the period of one day. ()

According to Tuvok, Vulcans used a device called a "pleenok" for training their infants in "primary logic." ()

Baby paraphernalia and practices 
 Baby booties
 Baby carriage
 Baby shower
 Crib
 Diaper
 Incubator
 Lullaby
 Playpen
 Rattle
 Hehh-duHpp

Locations 
 Fischer's Infants Wear
 Nursery/Nursery school

Babies in literature
 "Rock-a-bye Baby"
 "Rosemary's Baby"

See also 
 Hundred Changelings 
 Baby on Board

External link 
 
Biology
Social sciences