The Furball Foundation is a registered coin collector with the Numismatic Guaranty Company (NGC), and currently maintains the largest collection of ferret coins in the world.

The actual coins are sealed in a vault guarded by trained attack ferrets at Furball Foundation Headquarters. However, the collection can be viewed in its entirety on the NGC website – https://coins.www.collectors-society.com/WCM/CoinCustomSetGallery.aspx?s=31150