Beautiful horses, Katana! I've always loved bulkier, black horses.
My Grandfather, about 35 years ago, bred apps. and had some very high quality ones, apparently (and some not-so high qualities, but that's a differant story, and the reason my mother hates most apps. now and isn't a big fan of mares). He also bought his children an older Shetland pony mare, for the younger ones to learn to ride on.
Well, they apparently owned her for a few years, and decided that since she was in her mid-20s, she probably couldn't breed anymore (stupid, I know; my Grandfather wasn't all that horsey, despite everything), and let her run with the main herd - and the stallion. Lo-and-behold, she had an App/shetland foal that year... and the next year... and the one after that, before they finally sold her.
Obviously, I never saw them in person, but I have seen pictures of the foals. One had the leopard spots, app tail and maine and the Shetland head, legs and body; it was adorable. The others got the shetland maine and tail and shetland legs... and app. everything else. They looked like hippo-pony crosses.
Not sure what happened to them. They were sold as year-olds and my mother doesn't know what those people did with them.