2. Animal research: Pigs are often used in animal research because they are similar to humans in terms of their anatomy and physiology. This makes them ideal for studying a variety of diseases and conditions, including heart disease, cancer, and obesity.
3. Medical advances: Pigs have also been used to develop medical advances that have benefited humans. For example, pig heart valves have been used to replace damaged human heart valves, and pig skin has been used to treat burns.
4. Economic impact: The pig industry has a significant economic impact on the United States. It is estimated that the industry contributes over $24 billion to the US economy each year and creates over 500,000 jobs.
5. Cultural significance: Pigs have also had a cultural impact on the United States. They are featured in many works of art, literature, and music. For example, the pig is the national animal of the United States, and it is also the mascot of several sports teams, including the University of Arkansas Razorbacks.