A kitten will be considered a cat when it's nine months old. I once read that a cat was adolescent from about 10 to about 18 months of age... I guess that means s/he's an adult past 18 months of age.
Ethnically, Mexican Americans are a diverse population including Mexicans of Indigenous ancestry, Mexicans of European ancestry (mostly Spanish), and Mexicans of Middle Eastern stock (mainly Lebanese).
There is also a percentage of Mexicans of pure white European descent, representing 9 to 17% of the population (10 up to 19 million in 2010). Most European or Criollo Mexicans are of Spanish descent, including Basques, Castilians and Galicians.