Rolf Amelung , zoo in Germany Born 1951 in Germany dead 1992? in Germany . Previous head elephant keeper Rolf Amelung training the elephants in the old out enclosure in December 1981. Photo: Wayne A. Jackson, Canada In June 1988 the bull Siporex, born in Denmark, attacked head elephant keeper Rolf Amelung during training performance, and had to be kept off-hand since then. Later Siporex Feet got worse, and he was finally euthanized.