-I think this cow is from Buenos Aires.
-You are mistaken; although it walks rapidly as if it were late for work, its moo is typical of cows from Santa Fe.
Don't worry, this dialog is fictitious, but according to the most recent theories of language specialists, this conversation could easily be real, because cows, just like humans, seem to have regional accents.
learn about how such BS is created (unless you're lazy to read a page or so)