Hitler's Cows?

Apparently old Adolf had a desire to see extinct cattle roam Europe again, so he ordered German scientists to re-create the Aurochs from descendant stock breeds.

Here's a pic of a modern-day "aurochs:"



You'd have to run DNA tests to see how closely the German scientists came to reproducing the old line, which might prove difficult given the rarity of original Aurochs genetic material. Maybe you could find one in a bog or glacier somewhere?