Chestnut Ridge World Discussion

I wonder if horses will actually be aware of whether they sleep under a roof or not? As being household members they might be aware if they get wet from rain etc, but I'm pretty sure my sims living on small lots wanting a horse will try improvising some not-so-fancy accommodation for it ;) I mean, why should there not be a difference between a poor folks' horse and the horse owned by the wealthiest nectar&horse&goat&sheep rancher of he region?