Elephant An elephant was a very large Earth animal with a long trunk , which could weigh up to 7 , 000 kg . Their tusks were made of ivory . ( COMIC : " Witch Hunt " ) Encounters with elephants . The Doctor and his companion s occasionally encountered elephants . Among the prizes the First Doctor won in a game of backgammon against Kublai Khan in 1289 were thirty - five elephants with ceremonial bridles . ( TV : " Assassin at Peking " ) Elephants were one of the animal species brought on board the Ark in circa 10 , 000 , 000 to escape the destruction of Earth . Dodo Chaplet pointed an India n elephant out to the First Doctor and Steven Taylor and they proceeded to pet it . ( TV : " The Ark " ) The Second Doctor and Jamie McCrimmon once used a herd of animals – which included elephants – to stampede a group of Quark s . ( COMIC : " Jungle of Doom " ) The Seventh Doctor and Ace saw elephants living in the Ngorogoro Crater in March 1926 . ( PROSE : " Prelude Birthright " ) In about 120 AD , the Tenth Doctor learned that Roman authorities kept elephants as a part of a menagerie that included leopard s , giraffe s and a wide range of other , chiefly Africa n animals . Some of the beasts were kept for hunting , and others were used to face off against prisoners in local arenas . The Doctor was incensed by the practise , because he knew it would lead to the extinction of several of the species . ( PROSE : " The Stone Rose " ) In April 1861 , Leela and Abasi encountered an illusory elephant in the Congo . Leela determined that it was not real as it had no smell . ( AUDIO : " The Ghosts of Gralstead " ) Whilst in India in 1947 , the Doctor and Donna Noble travelled with Mohandas Gandhi and his party by elephant . Donna was amused by the rolling motion caused by the elephant ' s gait . Consequently , both she and the Doctor had a hard time controlling their laughter . As was customary in India , these " transport elephants " were highly decorated with flower s , bell s , and a howdah . ( PROSE : " Ghosts of India " ) There were elephants in the zoo that Martha Jones went to when she was young . ( PROSE : " The Last Dodo " ) They were also used as performers , with several working at the International Circus . ( TV : " Terror of the Autons " ) On 4 February 1814 , the Twelfth Doctor and Bill saw an elephant walking across the surface of the frozen Thames during the last frost fair . ( TV : " Smile " , " Thin Ice " ) Cultural references to elephants . In Voyager ' s dream world , a waterfall existed that was bordered by two elephant statues . ( COMIC : " Voyager " ) When talking to Davros about logic , the Fourth Doctor says " All elephants are pink , Nellie is an elephant , therefore , Nellie is pink ! " . When he asks if it logical and Davros agrees , the Doctor and Tyssan correct him that elephants aren ' t pink . ( TV : " Destiny of the Daleks " ) Human folklore stated that elephants never forget anything . It was a running joke between the Sixth Doctor and his companion Melanie Bush that she had the memory of an elephant . ( TV : " The Ultimate Foe " , AUDIO : " The One Doctor " , TV : " Time and the Rani " , AUDIO : " Unregenerate ! " , " The Warehouse " , " A Life of Crime " ) A life - sized model of an elephant ' s head was in Spellman ' s Magical Museum of the Circus in 2009 . ( TV : " Day of the Clown " ) Salvador Dalí once painted with long , thin legs . ( AUDIO : " The Forbidden Time " )