sentences:  Sudan, caught from the wild in 1975, died on 19 March 2018.After the transport, the four rhinos were under constant watch by specialists and staff, and lived in specially constructed bomas with access to a 400×400-metre paddock area, allowing them to acclimatize to their new surroundings.To prevent any unnecessary injuries they might inflict on each other while interacting in their fenced area, and give their horns an opportunity to regrow to a natural shape (as their front horns had grown bent by much rubbing against enclosure bars in captivity), all the rhinos were sedated and their horns were sawn off.