The Family of Four with a Pet

One father, one mother, two children and one pet

These members could make the ideal composition of a family. However, if some family doesn't have these members, the family is NOT the ideal?

Although this is one picture, it would make some sensitive issue. This picture seems to be drawn by the hand in order to contact with children's eyes, but some children who don't have this composition would think there is something strange about their family - what missing or adding.

The term 'ideal' is probably derived from the common sense recognising as perfection, but should consider that the common sense isn't always the best before using it.