The set of clothing is called a layette. (layette set)
The cloth wrapped around a baby is a swaddling cloth. Of course, soon they are wearing diapers.
Baby Snake
Infant Neonate Baby
I'd go with babe or baby.
Bebé, enfante, recién nacido (newborn).
One word. Newborn
Another word for baby could be small, miniature, petite, tiny or little. It could also be newborn, infant, and youngster.
Newborn deers are called "fawns".
Garb.
Some synonyms for newborn are old, aged, and elderly.
The mother animal who could not carry her newborn baby, watched her group leave the area, looked back at her baby, toward the group, back at the baby: her ambivalence about which choice to make appeared clear in her behaviour.
A newborn is a baby, it can be an animal or a human.. also called infant or child.
Inclined to brood.