I have a retired racing greyhound and four Italian greyhounds. I don't have a horse, but while visiting a friend, my greyhound got to run around in the horse's field. The horse was so funny ... he started bouncing around like my greyhound does. I think he enjoyed having a buddy, even if I was a nervous wreck about those hooves!!!
Here are my dogs ... big guy is Gryffin. Little ones are Luna (blue fawn on the left), Willow (seal in the front), Merlin (blue in front) and Walker (blue in back).