The clouded leopard (Neofelis diardi) population is currently in a very alarming and endangered condition. This study aims to determine the population structure of clouded leopards in the Bukit Tigapuluh. The research was conducted from November 2024 to January 2025 at Pt Alam Bukit Tigapuluh in 4 different phases, namely phase 1 in October 2020-January 2021, phase 2 in July 2021-November 2021,…