A national emblem is a symbol that represents a nation. It may or may not appear on the national flag. It is usually something from the natural world, eg. an animal or bird, but can be any object.
The official national emblems of nations of the world in alphabetical order :
... have a female householder with no husband present, and 37.4% are non-families. 31.6% of all households are made up of individuals and 12.1% have someone living alone who is ...