Wow, it's hard to believe this was two years ago! Unity, the brown one, ended up not liking Scout so much. She'd basically try to trample her, so if I did want to go in the pasture with Scout, I'd just carry a crop in one hand and that seemed to keep her at bay. Scout was smart enough to stick close to me. Depending on your horse's temperament it can be a cool relationship though. One of the first times I saw a vizsla in the wild, so to speak, was running along a trail behind its owners on horseback.