Elephant tamer Monique Holzmuller having a cigarette with one of her elephants. (Photo by Keystone/Getty Images). 1967

Rosie the elephants proves to be heavier than her companion and tips the park bench when she tries to sit down. (Photo by Mike Lloyd/Getty Images). 1977

“Kam”, an elephant from Bertram Mills circus “drives” a Land Rover along a road during training for the Christmas Show. (Photo by Ron Case/Keystone/Getty Images). 27th November 1959

Marina Frankordi, the 4-year-old daughter of bare-back rider Frankordi, helps circus elephant Sheila to practise her balancing act. (Photo by William Vanderson/Fox Photos/Getty Images). December 1964

An elephant extends his trunk towards the visitors from his new enclosure at London Zoo. (Photo by Evening Standard/Getty Images). Circa 1974

Visitors in the elephant enclosure at London Zoo, Regents Park draw the reclining elephant. (Photo by Fox Photos/Getty Images). March 1954

One of David Smart's elephants boards the bus to Earl's Court. (Photo by Colin Davey/Evening Standard/Getty Images). 16th July 1980

A Duke of Edinburgh's Gold Award winner meets an African Elephant at London Zoo. (Photo by Evening Standard/Getty Images). 2nd August 1971

Rolf Harris puts his ear to an elephant's trunk at London Zoo. (Photo by Evening Standard/Getty Images). 19th December 1967