I don't know of any horses that do! I even asked my vet about it and he said they didn't need it, which is weird because we live in the woods and there are rabies cases in Arizona, at least among wild animals.
I should probably ask him again this spring in case he's changed his mind.
I agree it sounds like a good idea. And dogs get rabies vaccinations all the time. So I assume it is a safe vaccine?
Kinda interesting just recently on another thread I brought this up and everyone decided I didnt know what I was talking about.