This is a good chart. Although, I think the teeth are smiling because they find it funny how miserable they make everyone. 9 months old, and Sophia already has 6 teeth! Poor sweet baby has been miserable the past few nights!
When do babies start teething? Find out when you'll see baby's first tooth—and when you can expect all the other teeth too—in our baby teething chart. http://www.mamanatural.com/when-do-babies-start-teething/