Dog food in San Miguel de Allende?

Why don't you consider making your dog food?  There are plenty of recipes online.  Also you do know that Beneful is the lowest quality food in the U.S. yet expensive here in Mexico.  I have been here for several years and either feed a raw meat diet or some cooked as it is much cheaper and definitely more healthy than that crappy Beneful or any Purina dog food.

My dog has been on Beneful for the 7 years I have had him and has been healthy  the entire time. I am very reluctant to change his diet.

Beneful is not what I would buy but readily available including Mega

Google Beneful and see what people have to say about it.   If you have a typical Mexican dog you probably aren't that interested in changing food compared to if you have a pure bred dog.