Taking pictures of toddlers is hard because they don't sit still. You spend the entire session crawling around on your hands and knees trying to get an angle on the child and usually end up covered in dirt or grass. However, it's the exploring nature of toddlers that makes for such good pictures. You don't have to tell a 1-year-old to "act natural," they are always acting natural and it can make for some great pictures if you are fast enough to get into position when they happen.