What kind of horse can you not show in a show?

This is a bit of a trick question! There isn't really a horse you *can't* show, but there are some that are less common or have specific rules surrounding their participation:

* Wild Horses: While you can't catch and show a wild horse directly, you can show horses descended from wild horses, like mustangs.

* Miniature Horses: These are considered a separate breed and have their own show classes.

* Draft Horses: While some draft breeds are shown in harness classes, they aren't as common in traditional riding and jumping events.

* Horses with certain disabilities: Horses with severe disabilities might not be able to compete safely in some disciplines.

* Horses that are unhandled or unsafe: Horses need to be trained and safe to handle before they can participate in a show.

Ultimately, the rules for which horses can be shown vary depending on the specific show and discipline. You'll need to check the rules of the event you're interested in.