Well, we never do know for sure now, do we?? ;)
Also I have seen something horrible that has something to do with a cross-breed- well I should say "hybrid." I saw this awful video (and please, Ik it seems sketchy or like "oh, it was clickbait," but it's not) of a piglet that appeared to be mixed with a human. If I ever find the video again, I'll try to get it to you, but it will most likely be censored.
Anyways, interesting discussion!! :)