How did you manage to ferret out this information, John?
Which of those book were you reading?

Is this like a gaggle of geese, a murder of crows and a
romance of ferrets? http://www.blackfootedferret.org/

Domesticated ferrets are often kept as pets, but it is illegal
to do so in California, Hawaii, and New Hampshire, and Puerto Rico.
(although pet stores sell ferret food, toys, shampoo, nests, etc)

I have been to Wall Drug and not far from there is a prairie
dog village where you can see these little critters up close.
this store first got is't start by offering free ice water to
those travelling to see the Mount Rushmore Monument.
http://www.walldrug.com/