The aurochs was a large, long-horned, wild ox that may have been the chief ancestor of modern European cattle.
Cave paintings of aurochs, drawn by primitive man, have been dated to as long ago as 30,000 B.C. Some aurochs may have been tamed by the year 10,000 B.C. But there are no aurochs today, in Europe or anywhere else.
The last aurochs (the word is spelled this way for both singular and plural) ever to live on earth was seen in the Jactorowka Forest in Poland. Sadly, this aurochs died in 1627.