Elaphurus davidianus, commonly known as the Père David's deer, is native to wetland environments in China. It has a unique combination of traits such as long, slender legs, broad hooves, and a distinctive antler structure. This deer is social, forming herds, and is adapted to swampy habitats.

Elaphurus davidianus, commonly known as Pere David's deer, was originally native to the marshlands and subtropical forests of the Yangtze River basin in China. However, it is now extinct in the wild and primarily found in captivity and reintroduction sites.

Pere David's deer historically inhabited wetland environments such as marshes, river valleys, and floodplains. These areas typically feature high humidity, abundant water sources, and dense vegetation.

Pere David's deer is adapted to an aquatic lifestyle, being a strong swimmer and often found grazing on aquatic plants. Its ecological niche involves feeding in water-rich areas, which provide both food and a degree of protection from predators. The species plays a role in the ecosystem by contributing to the maintenance of wetland vegetation through grazing.