Ever wondered why some babies sprout their first tiny tooth at four months while others take their sweet time and don’t get one until after their first birthday? Parents often swap stories, compare ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

A new birth cohort study reveals that a mother’s stress-related hormones in late pregnancy, especially cortisol, may quietly influence when her baby’s first teeth appear, uncovering a surprising link ...

Teeth help animals bite and chew food. Meat-eating carnivores tend to have sharp teeth to sink into their prey, while herbivores tend to have flatter teeth to grind down their plant-based meals. Some ...