I’d never actually seen a packrat before. Very few zoos have rats*, and those that do tend to have them in nocturnal exhibits. So you often either get a photo of a sleeping ball of fur, or you get a dark blurry photo of an awake rat. These guys were a bit more cooperative and stood right in the light for me.
*Eell, OK, all zoos have rats. Very few of them are intentionally on exhibit.