Male pigs of any age are called boars; female pigs are called sows. Pigs are found and raised all over the world, and provide valuable products to humans, including pork, lard, leather, glue,...
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China is the world's largest pork producer, followed by the European Union and then the United States. Around 1.5 billion pigs are raised each year, producing some 120 million tonnes of meat, often cured as bacon. Some are kept as pets.
They have insatiable appetites and smart brains, which help them to find new sources of food. Like their wild relatives, they have bristly fur, tusk-like teeth and short tails. However, domesticated pigs are the only ones whose tails curl and ears flop forwards.