Laughing may occur as early as 12 weeks of age and increase in frequency and intensity in the first year. At around 5 months, babies may laugh and enjoy making others laugh.

Can a baby laugh at 2 months?

Babies usually start laughing “between 2-4 months” says Nina Pegram, pediatric nurse practitioner and lactation consultant with SimpliFed. Before this, an intentional smile would most likely have occurred between 1-2 months; sometimes in their sleep, she adds. ... Some babies simply tend to be more stern.

Is it normal for a 3 week old to laugh?

The bottom line

For babies and young children, laughing in their sleep is typical and generally not a cause for concern. This is especially true if it's not accompanied by any abnormal behavior.