Translated it is Como estan los ninos ?
Kids is an English word and is not a Spanish word (to the best of my knowledge). If you want to know how to say kids in Spanish, the word is chicos.
I think some Spanish words kids should know are hola, chao and adios.
The reason that black and white kids sometimes look Spanish is because they have Spanish heritage in their blood. It may go back several generations, but having Spanish ancetsry will cause a child to look Spanish.
Mis hijos.
kids
on a dog
yes
"Kids' menu" can be expressed as "menú de niños".
yes.
de los hijos
It means kids in Spanish
Niños mexicanos.