[Renfield]

I have seen Chianina bulls (and even Ankina bulls) that were as tall as a bull moose....except for being polled, I don't know how these would be different from an Aurochs. They are just enormous.

I saw this bull at a livestock show in Louisville back in '80 or '81. I'm 5'11" tall, and this bull was as tall at the shoulder as I am. It was a big, big animal...

[MeanWestTexan]

They are big, but not spry — bred for meat.

If you look at an auroch (or African cattle or long horns) -— you see relatively long legs of an animal that is both big and fast.

Back-breeding is, IMHO, possible, but not with the euro-centric approach of the the Heck brothers (who were doing it for Nazi propaganda — big Aryan cattle).