Denver Zoo Retires Hippo Program After Move
The zoo's longtime Nile hippo has relocated to a Texas preserve, marking the end of the local hippo exhibit.
Updated on Oct. 23, 2026 in Wildlife
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The Denver Zoo has officially retired its hippo program and relocated Mahali, a 23-year-old Nile hippo, to a preserve in Texas. The move comes after the Association of Zoos and Aquariums deemed the local habitat unsuitable for the species.
Why it matters
The decision ends a long-standing local exhibit, motivated by the zoo's need to reduce its significant annual water usage of 21 million gallons amidst ongoing regional drought conditions. The facility plans to renovate the former hippo building for future use.
Mahali, a 4,000-pound Nile hippo, spent over two decades at the Denver Zoo before his relocation. He now resides in a 3-acre habitat at a preserve in Abilene, Texas, following a 700-mile road trip.
The players
Denver Zoo
A major local conservation and research institution currently retiring its hippo program to address water sustainability.
Association of Zoos and Aquariums
The professional organization that establishes welfare and housing standards for captive wildlife across accredited institutions.
Mahali
A 23-year-old Nile hippo born and raised at the Denver Zoo who recently relocated to a new Texas habitat.
The details
The relocation involved a 12-hour transport operation where Mahali traveled in a specialized crate via truck. The transport crew managed the 4,000-pound animal with periodic stops for hydration and feeding throughout the overnight journey to ensure his safety. This move marks the end of the Denver Zoo's hippo program, as the previous exhibit no longer meets modern standards set by the Association of Zoos and Aquariums.
Timeline
2015: Mahali's father, Bert, passed away.
2022: Discussions regarding Mahali's relocation began.
October 20, 2026: Mahali's road trip began at 7 p.m. Tuesday.
October 21, 2026: The hippo arrived at his new Texas preserve on Wednesday.
The Home Front
This closure reflects an ongoing trend among urban zoological institutions to evaluate animal enclosures against modern conservation and sustainability benchmarks. It highlights a broader shift toward prioritizing species-specific habitat requirements over traditional exhibit models.
Residents should check the Denver Zoo website for updates on when the construction and renovation of the former hippo space will be completed. If you are planning a visit, monitor the zoo's visitor announcements for any changes to accessible exhibit areas during the building transition.
The takeaway
The Denver Zoo's retirement of its hippo program emphasizes the importance of aligning large animal habitats with modern environmental and species-welfare standards. Families interested in local conservation can continue to track zoo exhibit updates through their official visitor communications.
Further reading
Learn more about local animal welfare initiatives on the Wildlife page.
Source note: This article includes information reported by Rocky Mountain PBS.
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