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).
Not hispanic, not Latino. Hispanics are defined as a person with ancestry from Mexico the Carribean or South America, but only a country conquered by Spain. Latinos are people from the Latin America. Spaniards are European, just as Italians, the French, and Portugese peoples.