This half-cast called Eclyse resides at the Schloss Holte Stukenbrock Safari Park near the German border with Holland. Apparently, the one-year-old zorse was the accidental product of a holiday romance when her mother, Eclipse, was taken from her German safari park home to a ranch in Italy where she mated with Eclyse's father Ulysses.
This black and white photograph comes from an experiment in 1899 to see if it would work and it did obviously. (image from wikipedia)