a su bebé

their baby

→ a
phrase Uncommon #23,216
their baby Here, a is the personal a used before a person or pet that is a direct object; it is not translated into English. Su can mean his, her, your formal, or their, depending on context.
SP: Vi a su bebé en el parque.
EN: I saw their baby in the park.

Ellos llamaron a su bebé Jane.

They named their baby Jane.

La madre puede oír a su bebé llorar.

The mother can hear her baby crying.

Mary le puso a su bebé el nombre de su abuela.

Mary named her baby after her grandmother.

La madre acarició a su bebé con mucho cariño.

The mother stroked her baby with great affection.

Tuve que cuidar a su bebé.

I had to take care of her baby.

Mary está dándole pecho a su bebé.

Mary is breastfeeding her baby.

Dice que dejó a su bebé afuera, en la caja de bebés ayer.

He says he left his baby outside, in the baby box, yesterday.

— Broker (2022)

Los padres llamaron a su bebé Akira.

The parents named their baby Akira.

Ella me pidió que cuidara a su bebé durante su ausencia.

She asked me to take care of her baby during her absence.

Usted aprenderá a amar a su bebé.

You will learn to love your baby.

Ella le sonrió a su bebé.

She smiled at her baby.

Tom y Mary llamaron a su bebé John.

Tom and Mary named their baby John.

Ella acarició a su bebé dulcemente.

She stroked her baby gently.