Here's a list: http://toyanimal.info//index.php?title=Schleich_The_World_of_the_American_Frontier
And here are the all the pictures: http://www.toydreamer.com.au/schleich1.asp?toytype=indians
A buffalo (14349) and wolf (14249) have been included in this series for a time, at least in the catalog.