A biogas plant at the Muenchner Tierpark Hellabrunn will be fuelled by dung from elephants, rhinoceroses, buffaloes and antelopes, and any left-over animal food.
Most rhinoceroses are solitary inhabitants of open grassland, savanna, scrub forest, or marsh in eastern and southern Africa and tropical Asia.
Scratched on the desert's rocks are the memories of a wetter Sahara, when water-dependent creatures such as lions, elephants, and rhinoceroses lived here.
On one occasion, a British patrol was routed by three rhinoceroses, and on another by a troop of enraged baboons.
Among this lot are cheetahs, lions, leopards, rhinoceroses, spotted hyenas and elephants.