* Appaloosa: This breed is famous for its spotted coat patterns, which can include a spotted rump.
* American Paint Horse: This breed can have "overo" patterns, which often feature a spotted rump.
* American Quarter Horse: While not as common, some American Quarter Horses can also have spotted rumps due to the presence of the appaloosa gene.
It's important to note that:
* Spotted rumps are not unique to American breeds. Many other horse breeds around the world, including the Arabian and Thoroughbred, can also have spotted rumps due to the appaloosa gene.
* Not all horses within these breeds will have spotted rumps. The presence of the appaloosa gene is variable, and many horses within these breeds will have solid coats.
So, while no American breed is *specifically known* for having spotted rumps, several American breeds can exhibit this trait due to the presence of the appaloosa gene.