Agriculture Animal Science is concerned with the science and business of producing domestic livestock species, including but not limited to beef cattle, dairy cattle, horses, poultry, sheep, and swine. An animal scientist applies principles of the biological, physical, and social sciences to the problems associated with livestock production and management. Animal Science is also concerned with foods of animal origin: meat, dairy foods, and eggs. The food industry is one of the largest and most important industries in the United States. In addition, animal science is concerned with aspects of companion animals, including their nutrition, care, and welfare.