Oh what a riot. :-D The other day some of the geldings were bucking and farting around in the paddock. My trainer's little dog started barking and ran in there. One of the geldings, in mid-rear saw that the dog was right by him, and STAYED up there, and you could tell that he was looking for the dog. Very gently, and very carefully he set himself down again and looked around as if to say: "Hey! Where are you?"
That's cool about the geldings looking out for the dog. My bunch would be actively trying to stomp it. They HATE dogs. I don't know why, because they've never really been around them.