Stampy

Stampy is a rogue African elephant that Bart owned for a time.

History
Bart won the elephant in a radio contest called "KBBL Wants to Give You Something Stupid." The listener was supposed to take $10,000 cash instead of the elephant (which was offered as a gag prize), but Bart caused a major uproar when he insisted on taking the elephant and was denied by the DJs and Marty. KBBL management forced Bill and Marty to give Bart an elephant by threatening to fire them and replace them with a machine. Under the threat, the DJs got an elephant to give to Bart, and Stampy came to live with the Simpsons.

Stampy quickly proved to be too much for the family to handle, however, as they didn't have enough room for him and couldn't afford the enormous quantities of food he needed. A poacher and ivory dealer, Mr. Blackheart, offered to buy him, but the Simpsons decided to donate him to a wildlife preserve after Stampy rescued Homer and Barney from drowning in a tar pit.

At Apu's wedding, Bart saw him riding an elephant. Bart commented, "I wish I had an elephant", to which Lisa replied, "You did. His name was Stampy. You loved him." His memory thus jogged, Bart simply replied, "Oh, yeah."

Stampy also was involved in a plan by Bart to help Krusty the Clown restore his public image.

During Trappuccino, Stampy helped the townspeople to break the dome. He was the first to make a crack in it.

Stampy competed against Homer in an Krusty-Veg Burger eating contest in the TV show . When Stampy and Homer started to eat the burger they split the burgers and they became enraged and began to run amok in Springfield. After some time Homer and Stampy calmed down.

Personality
Stampy is especially fond of peanuts and also enjoys putting people in his mouth.

Stampy is aggressive toward other elephants, as seen when he was first brought to the wildlife preserve. He also once attacked a bear as well.

In spite of his aggressive nature, Stampy has been trained to have a safety word, "magumbo". When someone says the word, Stampy goes limp and lies down, letting go of anything (or anyone) he's holding in his mouth.