The war triggered by the shooting of a pig is called the Pig War. It was a confrontation in 1859 between the United States and the United Kingdom over the disputed border in the San Juan Islands, located between Vancouver Island and the Washington Territory. The conflict began when an American farmer, Lyman Cutlar, shot a pig that was rooting in his garden, a pig owned by a British employee of the Hudson's Bay Company. This incident escalated tensions between the two countries, leading to a military standoff without any human casualties. The Pig War is also known as the Pig and Potato War or the San Juan Boundary Dispute. Despite the high tensions, no shots were fired beyond the one that killed the pig, and the conflict was eventually resolved diplomatically.
