While other breeds can occasionally have curly hair due to a recessive gene, the Curly Horse is the only breed that consistently and reliably expresses this trait.
It's important to note that the Curly Horse isn't a distinct breed in the traditional sense. It's a coat type that can be found in various breeds, including:
* American Quarter Horse
* Appaloosa
* Morgan
* Paint Horse
* Thoroughbred
So, while you can say "Curly Horse", it's more accurate to say "Curly *breed name*" to specify the actual breed of the horse.