Execution by Elephant
Elephants have long been used as a executioners. They were ideal for the gruesome job due to their ability to be trained, indeed they could even be taught in what manner they should execute; kill fast by crushing or to slowly torture the prisoner. Weighing the same as a couple of cars and having the ability to push trees over with their heads was also said to not have done any harm in pushing their CV to the top of the pile.
via the bloody brilliant Wikipedia