Japanese macaques in Nagano use hot springs during winter, demonstrating remarkable behavioral adaptation, but tourism pressure and habituation to humans create welfare risks for these populations.
Japanese macaques habituated to tourist presence at hot spring sites face welfare risks including stress from crowding, loss of natural foraging behavior through food provisioning, and increased human-wildlife conflict as they learn to seek food from people. Managing visitor distances, eliminating food provisioning, and monitoring macaque behavior indicators at tourist sites protects the welfare of these culturally unique populations while allowing sustainable wildlife tourism that funds conservation.