Industrial agriculture is the largest sector involving animal use. Issues like battery cages for hens, gestation crates for pigs, and the environmental impact of livestock have led to a surge in plant-based diets and "cruelty-free" labeling. Governments are increasingly banning the most restrictive confinement methods due to public pressure. 2. Animal Testing and Science
focuses on the well-being of animals under human care. It operates on the premise that humans can use animals for food, research, and companionship, provided they are treated humanely. The "Five Freedoms"—freedom from hunger, discomfort, pain, fear, and the freedom to express normal behavior—are the gold standard for welfare. 3. Entertainment and Wildlife
The "3Rs" (Replacement, Reduction, and Refinement) guide the ethical use of animals in labs. While medical breakthroughs have historically relied on animal models, there is a massive shift toward "in-vitro" (cell-based) testing and computer modeling to phase out animal subjects. 3. Entertainment and Wildlife The "Five Freedoms"—freedom from hunger