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).
Language in Mexico. Spanish control of Mexico led to the dominance of Spanish, the official language. As many as 100 Native American languages are still spoken in Mexico, but no single alternative language prevails. Eighty percent of those Mexicans who speak an indigenous language also speak Spanish. The most important of the Native American languages is Nahuatl.