Usually, people visit the zoo to see live animals, but at the Great Plains Zoo in Sioux Falls, South Dakota, visitors also had the opportunity to view preserved animals. The Delbridge Museum of Natural History, located within the zoo, showcased an impressive collection of taxidermy animals from around the world. Each animal was meticulously displayed in dioramas that depicted their natural habitats. However, after nearly 40 years, the museum has been closed due to concerns about chemical exposure. The majority of the taxidermy mounts contained arsenic, a toxic substance that can have serious health effects. City officials decided to close the museum to prioritize the safety of staff and visitors. This decision has been met with backlash from Sioux Falls residents who have fond memories of the museum and fear that it will be permanently removed. Some residents believe that the closure is part of a larger plan to make room for newer attractions. The conservation community is also concerned, as the museum’s closing might raise unnecessary worries about the safety of other antique collections. Arsenic was commonly used in taxidermy before the 1980s as an embalming agent to prevent pests. It is prevalent in green pigments once used for clothing and other objects. The closure of the museum has sparked discussions about the potential risks associated with older taxidermy mounts and the need for proper assessment and conservation measures. Although the future of the collection remains uncertain, city officials have assured residents that the animals will not be disposed of thoughtlessly. Efforts are being made to develop a plan for the collection, but legal and logistical challenges must be addressed, including the protection of endangered species. Some residents are advocating for the preservation of the collection and exploring alternatives to house the animals. The aim is to find a suitable location where the taxidermy mounts can continue to be displayed and appreciated.