When it comes to babies, what goes down … must sometimes come up. From spit-up to food refusal, about 50% of infants develop ...

Add Yahoo as a preferred source to see more of our stories on Google. It takes years for kids to figure out how to spit — but it's an important skill. (Photo: Getty; illustrated by Nathalie Cruz) ...

There will no doubt come a time when your child spits more than you'd like (especially when their target is a sibling and not, say, the bathroom sink). But parents of young children may not realize ...