Do you keep your vegetables on one shelf in your fridge, and eggs and meat on another?
A new study shows that humans aren't the only species that organizes things like this - squirrels do it too.
Fox squirrels organize their stashes of nuts by variety, quality and possibly even preferences - evidence of a cognitive strategy called chunking.
The study, conducted by researchers at the University of California, Berkeley, is the first to show evidence of squirrels arranging their finds using 'chunking,' a cognitive strategy in which humans and other animals organize spatial, linguistic, numeric or other information into smaller more manageable collections, such as subfolders on a computer.
Fox squirrels stockpile at least 3,000 to 10,000 nuts a year and, under certain conditions, separate each cache into 'subfolders', one for each type of nut.