Why there's no such thing as a "dominant horse"
Some horse people believe that horses form dominance hierarchies which are integral to group members getting along without open conflict. Others believe this is false. Both are right (and wrong) because, as ethologist Victor Ros points out, dominant behaviour arises from a horse culture which develops among horses who live under unnatural circumstances. That's why we have all seen dominant behaviour, even if it doesn't really feature in untouched, truly wild living equine social groups.