Photos show how a tree snake makes its body into a lasso to climb and hunt prey Photos show how a tree snake makes its body into a lasso to climb and hunt prey Aylin WoodwardJan 15, 2021, 00:47 IST A brown tree snake in a tree in Guam.Bjorn Lardner A new study shows a species of tree snake uses an unprecedented form of locomotion in order to climb objects like trees. The brown tree snake loops its body into a lasso around wide, cylindrical objects in order to ascend them. This lasso technique likely helps the snake scale wider trees and hunt birds nesting in the canopy.