Yes.
The sentence "The baby cried" is a complete sentence because it has a subject (the baby) and a verb (cried) and expresses a complete thought.
Seldom
Baby Cries - 1907 was released on: USA: February 1907
Baby Cries - 2014 was released on: USA: 2014 (DVD premiere)
The verb is "was." The subject of the verb is "baby." "Tired" is a predicate adjective.
when a baby cries for a toy would that be an instinct or a learned behavior
a monkey
You should never shake a baby.
when the baby keeps on kicking
It is within the mother, that she is aware of the cries of her baby. There are different types of crying. There are hunger gries, diaper-change cries, and even difficulty of burping cries. A mother differenciates between the cries and somehow knows what her child needs.
babies crying
Swaddle the baby and turn on some white noise.