Have pictures of different horse breeds tacked (pun intended!) around the room. Give out papers with the names of the different horses and clues that would help to identify the different breeds. (Decide how much of a giveaway this needs to be and build the clues around this. I wouldn’t expect Cub Scouts from Valentine, Nebraska, to be given anything but a blank sheet of paper; but the Cub Scouts from downtown NYC would probably need coaching that there are different horses beside the ones the officers in Central Park ride.)