War pig
War pigs are pigs reported to have been used in ancient warfare as military animals, mostly as a countermeasure against war elephants.
Historical accounts of incendiary pigs or flaming pigs were recorded by the Greek military writer Polyaenus and by Aelian. Both writers reported that Antigonus II Gonatas' siege of Megara in 266 BC was broken when the Megarians doused some pigs with combustible pitch, crude oil or resin, set them alight, and drove them towards the enemy's massed war elephants. The elephants bolted in terror from the flaming, squealing pigs, often killing great numbers of their own soldiers by trampling them to death. According to an account, Gonatas later made his mahouts keep a swine among elephants to accustom the animals to pigs and this practice was immortalized by a Roman bronze coin dating back to his time, which showed an elephant on one side and a pig on the other.