From Webkinz Insider Wiki
It is very confusing that there are two types of "Zummies".
I started this page using the names "Visit Zums" Zummies and "Zums Sighting" Zummies but changed those names to Z-Shop Zummies and Zumthings Catalog Zummies.
Please edit this if you can think of a better way to make this information clearer! --Curiousg 13:22, 7 November 2010 (EST)