[Verginius Rufus]

Yes, I was kidding about zebras...I have read that they are impossible to domesticate (despite many efforts).

I saw one of Przewalski's horses in a zoo. Looked very horselike. So nice of Mr. Przewalski to give one of his horses to the zoo.

[Verginius Rufus]

On zebras, see Jared Diamond's Guns, Germs and Steel, chapter 9.