Tree squirrel Tree squirrel Tree squirrels are the members of the squirrel family (Sciuridae) commonly just referred to as "squirrels". They include over a hundred arboreal species native to all continents except Antarctica and Oceania. They do not form a single natural, or monophyletic group; they are related to others in the squirrel family, including ground squirrels, flying squirrels, marmots, and chipmunks. The defining characteristic used to determine which species of Sciuridae are tree squirrels is dependent on their habitat rather than their physiology. Tree squirrels live mostly among trees, as opposed to those that live in burrows in the ground or
Brilliant arboreal alligator lizard in protected areas such as Mario Dary Rivera Protected Biotope and Sierra de las Minas Biosphere Reserve. 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