Abstract

The majority of animals cared for by modern zoos now live longer than their wild counterparts. This increase in both mean and maximum lifespan has resulted in a greater number of individuals which can be termed aged or geriatric (henceforth geriatric) resulting in an increased number of individuals with age-related pathologies. A wide range of these have been identified in zoo animals which can present subtly and are typically debilitating and painful and negatively impact the overall welfare of the animal. End-of-life decision-making in geriatric animals takes place in most modern zoos and can be an emotive subject involving multiple stakeholders. Effective decision-making requires clear communications between stakeholders and is influenced by the culture of the people making the decisions, as well as the relevant applicable legislation. Modern zoos make end-of-life decisions in geriatric animals based on a detailed welfare assessment, including as much objective data as possible, with an overall focus on preventing unnecessary suffering of the animals involved. This chapter goes through the stages of decision-making and planning with examples of cases and scenarios we have experienced.