Earlier quoted context omitted.
I'm not an expert on squirrels, but that could be a ground squirrel[1] of some sort. Some varieties of ground squirrel look a lot like chipmunks. [1]: https://en.wikipedia.org/wiki/Ground_squirrel
A quick search for "striped ground squirrel" turned up only one variety, the thirteen-lined ground squirrel. The animal in the photo has stripes like a chipmunk.
http://naturemappingfoundation.org/natmap/facts/chipmunk_vs_...
http://www.differencebetween.info/difference-between-squirre...