Plague Trivia

I was watching a documentary about a French town that had a plague epidemic back in the Middle Ages. From studying a painting they decided it was bubonic plague. The only helpful information I picked up from that show was that while dogs died right along with the people who lived there, horses didn't. The fleas that spread the plague didn't like horses, from what I remember. So if there is ever a bubonic outbreak, I'm buying a pony. I would buy a full-sized horse, but I think a pony would be easier to keep inside. A horse would keep hitting its head with the ceiling fan, and might have trouble drinking out of the toilet.