This Network Paper discusses livelihoodsbased livestock programming and its role in humanitarian emergency response. It highlights the importance of taking livelihood assets, in particular livestock, into account in responding to emergencies and describes how the Livestock Emergency Guidelines and Standards (LEGS)Project has been developed to support this process. LEGS aims to promote the use of livelihoodbased livestock responses to emergencies, through building the capacity of humanitarian actors to plan and intervene appropriately. LEGS can also be used to assist in the evaluation of emergency responses by providing a framework and benchmark against which interventions can be reviewed.