What were the chihuahuas originally bred for?

Simply put, Chihuahuas are little dogs. They are used as pets, though I don't think they are "used" at all.

Answer::They are kept as pets,However they are also used as food,Chihuahua meat (like most all dog meat) is lean and very Low-fat and it combines great with yellow onions, potatos, carrots, celery,green peppers,and sweet peas slow cooked in a stew, its basically our western(US) version of the Korean dish poshingtan.Chihuahua meat is also very good when its cooked rare and carmalized with green onions, shreaded carrot and cabbage with a little minced garlic,ginger and sesame and then served over rice...