where do i find small plastic dog figuirines of different breeds?

Some breeds are available through Breyer, the popular model horse company. Their website is breyerhorses.com. They don't have many molds, but several are painted in different patterns and if you do a quick google search, you can find someone who will custom paint them (for ART and model horse shows - some models of horses go for up to a thousand dollars or more if they were sculpted and painted by someone well known in the hobby!) for you, or even re-sculpt some of the features to come up with a new breed. Of course, if they're just for playing, a few Breyers of various colors would probably be enough.  more