Our research focused on the Critically Endangered Chinese pangolin Manis pentadactyla in the Siang River basin of Arunachal Pradesh in north-east India, home to the Indigenous Adi People. We found evidence of a resident Chinese pangolin population in the study area after assessing pangolin presence from walking surveys and camera trapping at pangolin burrows. We assessed the effectiveness of positioning camera traps based on the local knowledge of the Adi People. Camera-trap capture rates (5.1%) were comparable to or higher than those reported in other studies across Africa and Asia, highlighting the value of incorporating local ecological knowledge in camera-trap surveys. Our findings underscore the complementary nature of Indigenous knowledge and scientific methods, especially for elusive species such as pangolins.