Daddy tells them to smile for the picture: now look what this cute dog does...

When you say that dogs are part of the family, it doesn't just mean that they live under the same roof, but they actively participate in all family rituals, including, as in this case, taking photos. When the father of this girl tells them to smile for a photo, the 10 years old Dalmatian reacts with a big and hilarious smile, which obviously triggers the enthusiasm of the whole family.