The world record for the heaviest pig so far is held by Big Bill, owned by Elias Buford Butler of Jackson, Tennessee. It was a Poland China breed of hog that tipped the scales at 2,552 lb (1,157 kg) in 1933. Bill was due to be exhibited at the Chicago World Fair when he broke a leg and had to be put down. At about this point in time, the trend in hog production began to shift to hogs that were much trimmer and very lean.