The document discusses opportunities for livestock research to support development goals in developing countries. It identifies three trajectories for livestock systems - "strong growth", "fragile growth", and "high growth with externalities" - and discusses opportunities within each trajectory. For systems with strong growth, research could focus on sustainable intensification and market access. For fragile systems, research could enhance resilience. For high-growth systems, managing environmental and health risks is a priority. The document advocates for research with stakeholders and a theory of change to achieve impact at scale.