Pygmy Hippo Hannah Shirley, 51, Becomes Oldest Of Her Species In Managed Care

Hannah Shirley, a resident of the San Diego Humane Societys Ramona Wildlife Center, has officially become the oldest living pygmy hippopotamus ever recorded in managed care.

On May 25, 2025, she surpassed the previous longevity record of 51 years, 6 months, and 2 days — a significant milestone for a species whose typical lifespan in the wild is between 30 and 50 years.

Born on Nov. 22, 1973, Hannah is listed as animal #365 in the Association of Zoos and Aquariums (AZA) Regional Studbook, a registry that tracks pygmy hippos in human care worldwide. Her record-setting age underscores the level of attention and specialized care she has received since arriving at the Ramona Wildlife Center in 2002.

“Every day with Hannah Shirley is a gift,” said Autumn Welch, Wildlife Operations Manager at the Ramona Wildlife Center. “Her playful spirit, resilience and sweet personality make her a truly special ambassador for her species — and a symbol of how excellent care can help animals thrive far beyond whats expected.”

Hannah was originally rescued after being found in a private backyard in Escondido, Calif. Since then, she has enjoyed life in a 13,000-square-foot paddock equipped with a natural pond and pool. Her daily routine includes what her caregivers describe as spa-like treatments, from sprinkler showers to back rubs, along with enrichment activities centered around her favorite foods.

Managed by the Project Wildlife team, Hannahs care plan includes tailored nutrition and veterinary support aimed at sustaining her health in advanced age. With only a few dozen pygmy hippos currently in managed care across North America, her longevity not only sets a new record but also shines a light on the importance of wildlife care and conservation efforts.

“Anyone who meets Hannah falls in love with her,” added Angela Hernandez-Cusick, Wildlife Rehabilitation Supervisor. “Her free spirit captures the joy of working with wildlife—were lucky to care for such a special species.”