Tapirs are semi-aquatic mammals that use water for thermoregulation, social behaviour, and escape from threats, making water access essential in captivity.
Tapirs denied adequate water access cannot thermoregulate effectively, express aquatic social behaviours, or use water for the diverse purposes they employ in wild habitats. The quality and depth of water provision is a primary welfare indicator for tapirs in captivity. Best practice enclosures include pools large enough for full swimming behaviour and deep enough for complete submersion.