Arboreal locomotion becomes the most likely failure. In this case, large-diameter branches pose a greater challenge since the animal cannot place its forelimbs closer to the center of the branch than its hindlimbs. Branches are not continuous, and any arboreal animal must be able to move between gaps in the branches, or even between trees. This can be accomplished by reaching across gaps, by leaping across them or gliding between them. Arboreal habitats often contain many obstructions, both in the form of branches emerging from the one being moved on and other branches impinging on the space the animal needs to move
Brilliant arboreal alligator lizard Brilliant arboreal alligator lizard The brilliant arboreal alligator lizard (Abronia gaiophantasma) is a species of lizard endemic to the mountains of east-central Guatemala, from the Sierra de las Minas east to the Chilascó region. It occurs at elevations of 1,600–2,650 m, and can be found in pine–oak and cloud forests of lower montane wet forests. Its extent of occurrence is estimated at only 750 km, and has been declared endangered. Threats to this species include habitat loss from agriculture, and the exportation of ornamental "Chamaedaphne calyculata" plants, conversion of habitats to pine plantations, and intentional fires. It can be found