She appeared in over 65 films between 1950 and 1971 including Sergio Leone's A Fistful of Dollars in 1964 in which she appeared alongside Clint Eastwood.
She returned to college in 1971 to study medicine, and practiced an an internest in Munich until 1997. We don't know the name of her wire-hair dachshund. Find out more about Marianne Koch at this translated German wikipedia link.
Marianne Koch and Clint Eastwood in A Fistfull of Dollars