Summary: Over the last sixty years, industrial agriculture has expanded in the United States and throughout the world, including in Brazil. Any benefit this expansion has brought comes at significant environmental and social costs. Industrial agriculture is a leading contributor to global climate change, air and water pollution, deforestation, and dangers in the workplace. This Article discusses the impact of industrial animal agriculture in the U.S. and Brazil. It also examines the laws pertaining to industrial agriculture in both countries and provides a comparative analysis of the two legal regimes. Finally, this Article concludes with the observation that although the price to the U.S. and Brazil of remedying these impacts are high, the costs to humans, animals, and the environment by failing to do so is immeasurable.