The involuntary grin babies make when passing gas, while still pretty cute, doesn’t really count. One day when your baby’s around 2 months old you’ll be gazing down at him, smiling about what a beautiful baby boy you have, then he’ll smile right back! For many parents, this “social smile” is the most rewarding moment they’ve shared so far — a great sign that their child’s vision and communication skills are developing, as well as an important way to bond.
