The round and cherry-shaped dummy is a classic dummy where both teat and shield are roundly shaped.
Some children prefer this shape over any other shape. The explanation is, that this shape is very close to the shape of a mothers breast, and the round dummies as a result feels more natural and soothing to the child. Many midwives and nurses recommends this type of dummy, because of these exact qualities.
Another advantage of this shape is that it is very easy for children to keep the dummy in their mouth. Dummies of other shapes often have smaller teats and are more difficult to hold on to and hence they are more easily lost or dropped.