Here's more info on why Vulpix, Exeggutor, Sandcrew and others have their respective Alola forms. This is pretty cool as the environment is now a major factor in changing the designs and types of these old Pokemon. Pretty cool, like having a regular bear in the forest and a polar bear in the Arctic.
http://www.nintendo-insider.com/2016/08/alolan-exeggutor-vulpix-sandshrew-and-more-revealed-in-pokemon-sun-and-moon/







