Mickey Or Molly?

[Tollers-n-Dobes]

I'd take Mickey, for sure. Molly, like you said, might startle the horses. It would be great socializing for her, but if she's loud and full of excitement I think it would be best not to take her around horses. That's just my opinion of course though...if it were me, I probably wouldn't bring a dog at all just because you nevr know how they or the horses will react.