How many different mustang breeds are there?

There's a bit of a misunderstanding here. "Mustang" isn't a breed, it's a type of horse.

Here's the breakdown:

* Mustangs are feral horses. They descended from horses brought to the Americas by Spanish explorers, who escaped or were intentionally released.

* They don't have a specific breed. Mustangs can be a mix of various breeds, including Spanish Colonial horses, Thoroughbreds, Quarter Horses, and even draft breeds.

* Over time, they've developed distinct traits. These include hardiness, resilience, and a strong survival instinct.

So, there's no set number of "Mustang breeds." It's more about their wild origins and their shared characteristics.