The squirrels will fight rattlesnakes down here too.
I see little chipmunk like things (they look more like mini-prairie dogs though) all over (see them dart across the road now and then, and at this one park we would go to there were a bunch of them in the rock walls (they're just bunches of rock with some metal netting holding them together, so lots of little crevices).
I have this framed in my kitchen overlooking my bird feeders.
This reminded me of this video we watched in science class in high school, where supposedly this squirrel was going around beating the shit out of people (there were like 3 adults that went to the hospital over it). They had re-enactments and they were hilarious. They'd show the squirrel like stalking people and hiding from the police (no joke, they showed a police car driving down the street slow looking for the squirrel, and the squirrel was hiding on the opposite side of a tree and would poke its head out over and give a menacing look).