Snare traps.

A common trap (dahin), which can catch most species of mammals and reptiles (A) and a trap specifically designed to snare small non-human primates (B) as they cross a cleared portion of forest on a branch. These latter traps are uncommon because they are difficult to build and non-human primates learn to avoid them. Both traps work by snaring animals with use of a spring mechanisms when they pass through a sensitive trigger mechanism (arrows).