Hmm . . . I don't exactly know. I was trying to help my mom sell some of these the other day, and we just resorted to looking up "brown pug" or "gray kitty," etc. on Ebay and seeing if they sell on their own, and if not we just combined them in a lot. If you look up "littlest pet shop id" on Google, the first result is the LPS wiki, and they list the numbers of all the pets. That might help to help you look them up on Ebay.