The Elephant and Rhino Pavilion was built as a successor to Anthony Salvin Junior's Elephant and Rhinoceros House of 1868-69. Plans for a new building had been prepared by Tecton in 1939, but the outbreak of war prevented their implementation. The site was chosen in 1950 and the building became the principal southern focus of Casson's 1958 redevelopment plan. It was built 1962-65, brief by Desmond Morris, Curator of Mammals; Sir Hugh Casson, Neville Conder and Partners, architects; John Mowlem and Company Limited, building contractors. Paddock pool added in 1971. Rhino moat altered 1988. It is Grade II listed.