Some of the earlier color variations from the game sets are hard to find - the colored frogs are the oldest and the farther away in time we get the fewer seem to be out there.

Really rare would be some of the FunPark animals that were only available in Germany at the FunPark. Of the ones not in production right now the glow in the dark lobster is one of the best.

You can check my
FunPark Animals page to see others. I don't know if I've missed any over the years or not. I have full assortments of animals from 2005 and 2011 plus the dino babies. If anyone knows of others I would like to know (and get them).
The white mouse from the Speyer Exhibition would also be considered pretty rare
