(January 16, 2015 at 1:01 pm)dyresand Wrote:(January 16, 2015 at 1:00 pm)Davka Wrote: Devil's advocate: sometimes, yes. Every once in a while, a mule (offspring of a horse and a donkey) comes out fertile. It's extremely rare, but it does happen.
Cross breeding.
Yeah, although that's usually between plant species rather than animals.