Toddler Jealousy of New Baby
The short answer
Jealousy toward a new baby is one of the most natural and expected toddler emotions. Your older child has had your undivided attention and is now learning to share it — a monumental adjustment. Jealousy may show up as clinginess, acting out, regression, or even asking to send the baby back. With empathy, dedicated one-on-one time, and patience, most toddlers gradually adapt within a few months.
By Age
What to expect by age
The initial adjustment period is often the hardest. The toddler sees a dramatic shift in routines and parental availability. They may demand to be held when you hold the baby, interrupt feedings, or become extra clingy. Validating their feelings ("You wish I could hold you right now") while maintaining safety is key.
Some toddlers settle during this period while others escalate as they realize the baby is a permanent family member. Jealousy may manifest as deliberately misbehaving during baby care, refusing to cooperate, or expressing negative feelings about the baby. Continue to acknowledge emotions and carve out special time.
As the baby becomes more interactive and receives praise for milestones like sitting or babbling, jealousy can resurge. The older child may feel overshadowed. Celebrating the older child's achievements and giving them important "big kid" roles helps maintain their sense of significance.
Once the younger child is walking and talking, the dynamic shifts again. Jealousy may continue but often transforms into genuine sibling interaction. Fostering cooperative play and continuing to provide individual attention to each child builds a foundation for a positive sibling relationship.
What Should You Do?
When to take action
- Your toddler says they do not like the baby, wants to send the baby back, or asks why the baby is here
- Your child demands attention specifically when you are busy with the baby — nursing, changing, or holding
- Your toddler reverts to baby-like behavior such as wanting a bottle, crawling, or using baby talk
- Jealousy comes in waves and your child also shows moments of genuine affection toward the baby
- Your child seems persistently sad, withdrawn, or anxious for more than a month after the baby arrives, and does not respond to extra attention and reassurance
- Jealousy is manifesting as severe behavioral changes such as refusing to eat, persistent sleep disruption, or significant aggression toward others
- Your child's self-esteem seems affected, and they express feelings of being unloved or unwanted
- Your child expresses a desire to hurt themselves or the baby in a way that seems serious or planned
- Your child shows signs of severe depression or anxiety, such as complete withdrawal, loss of interest in all activities, or inability to function in daily routines
Sources
Related Resources
Related Behavior Concerns
New Sibling Adjustment and Regression
Behavioral regression after the arrival of a new sibling is one of the most common and predictable responses in toddlers. Children may temporarily lose skills they had mastered — such as toilet training, sleeping independently, or self-feeding — as a way of coping with the enormous change in their family. With patience and reassurance, most regressions resolve within a few weeks to a couple of months.
Sibling Rivalry in Toddlers
Sibling rivalry is a completely normal part of child development and is nearly universal in families with more than one child. Toddlers are naturally egocentric and have limited ability to share, take turns, or manage frustration — all of which fuel sibling conflict. While it can be exhausting for parents, most sibling rivalry decreases as children develop better language and emotional regulation skills.
Toddler Hitting Baby Sibling
It is very common for toddlers to hit, push, or be rough with a baby sibling. Toddlers have limited impulse control and cannot fully understand that the baby is fragile. This behavior is usually driven by jealousy, frustration, curiosity, or a desire for attention rather than malice. Close supervision, calm redirection, and teaching gentle touch are the most effective strategies.
Aggressive Play vs Normal Play
Rough-and-tumble play — wrestling, chasing, play-fighting, and superhero battles — is a normal and important part of child development, particularly for toddlers and preschoolers. It helps children develop physical coordination, social skills, self-regulation, and an understanding of boundaries. The key distinction between normal rough play and concerning aggression is whether both children are having fun, there is turn-taking in roles, and no one is intentionally trying to hurt the other.
My Toddler Is Aggressive Toward Pets
Toddlers being rough with pets is extremely common and almost never reflects true aggression or cruelty. Young children lack the motor control to be consistently gentle and do not yet understand that animals feel pain the way they do. With patient, consistent teaching about gentle touch and close supervision, most toddlers learn to interact safely with pets by age 3-4.
My Baby Doesn't Seem Attached to Anyone
By 7-9 months, most babies show clear preferences for their primary caregivers and some wariness of unfamiliar people. If your baby seems equally comfortable with everyone and shows no distress when separated from caregivers, it may simply reflect an easy-going temperament. However, if combined with other social differences, it can occasionally warrant further discussion with your pediatrician.