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<p>The global debate over the ethics and purpose of elephants in zoos has resulted in proposed legislation to cease keeping them, unless zoos can demonstrate the species’ needs are met. Outdated analyses that fail to provide a current and robust appraisal of elephant survival in zoos fuels the debate. We analysed changes in life expectancy and lifespan equality in zoo elephants between 1960 and 2024, and compared these to wild or semi-wild populations. We found an increase of up to 21% in female zoo elephant life expectancy over time, and up to 44% for males. Lifespan equality increased by up to 14% in both sexes. Improvements in care have resulted in comparable or higher survival measures of zoo elephants compared to evaluated wild populations. Our findings provide information to guide zoos to ensure elephants live long meaningful lives that are, at a minimum, comparable to wild counterparts.</p>

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Temporal improvements in elephant longevity challenge the notion of compromised survival in zoos

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月20日

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  • Fiona Sach,
  • Johanna Staerk,
  • Hannah Jenkins,
  • Dalia A. Conde,
  • Morgane Tidière,
  • Malcolm Fitzpatrick,
  • Fernando Colchero

摘要

The global debate over the ethics and purpose of elephants in zoos has resulted in proposed legislation to cease keeping them, unless zoos can demonstrate the species’ needs are met. Outdated analyses that fail to provide a current and robust appraisal of elephant survival in zoos fuels the debate. We analysed changes in life expectancy and lifespan equality in zoo elephants between 1960 and 2024, and compared these to wild or semi-wild populations. We found an increase of up to 21% in female zoo elephant life expectancy over time, and up to 44% for males. Lifespan equality increased by up to 14% in both sexes. Improvements in care have resulted in comparable or higher survival measures of zoo elephants compared to evaluated wild populations. Our findings provide information to guide zoos to ensure elephants live long meaningful lives that are, at a minimum, comparable to wild counterparts.