I have two male chipmunks, about half a year old, named Poet and Charlie. They were in separate litters, the last of the year, but because of petstore traumas aren't completely tame yet. They get frightened easily but are used to humans now - I can pet them and hold them but not for long! Never been bitten yet, either. Charlie is a bit older, and larger. Unlike having their own nest boxes as chipmunk books say they do, they share one (I think from early trauma/bonding). He used to sleep half on Poet in the box, and is known for his big rear end (Fat Charlie). Poet was a bit younger, still growing up when I got him. He likes getting up in tall places keeping watch and is more used to me than his surrogate brother is.
They live in a four level wire cage, 5 feet tall, with three nest boxes, a miniature waterfall, real branches to climb and plenty of hiding spots. They get fed squirrel feed, mixed with Nutriphase mouse feed, an array of seeds, nuts, fruit & veggies and other treats like peanuts. Plus three different supplement vitamins and bee pollen (anyone else ever used it? Or honey?). They get their own room to run around in which is fairly chipmunk-proof. Pictures coming once I post on here often enough!