The Mount Graham red squirrel is a small, tree-dwelling rodent found only in the Pinaleño Mountains of Arizona. This species is characterized by its reddish-brown fur, bushy tail, and small size, typically weighing around 200 grams. It primarily inhabits coniferous forests, where it relies on pine cones and other seeds for food. This squirrel is considered endangered due to habitat loss and environmental changes. Conservation efforts are in place to protect its remaining habitat and ensure the survival of this unique species. The Mount Graham red squirrel plays a vital role in its ecosystem by aiding in seed dispersal and maintaining forest health.