In April 1865, the government found that the living conditions in the Jardin were very bad. Officials thought some of the elephants should be sent to zoos in other countries. The officials of the London Zoological Gardens in Regent's Park wanted an African elephant. They traded an Indian rhinoceros and a few other animals for Jumbo. He was brought to the London Zoo in June 1865. Jumbo was lucky. Castor and Pollux were killed during a war with Prussia in 1871. They were eaten by the French.