The Douglas Squirrel, also known as the Chickaree or Pine Squirrel, is a small mammal that is native to the western region of North America. This squirrel is characterized by its reddish-brown fur, and a distinctive tuft of hair on its ears. There are several synonyms used for the Douglas Squirrel, including the Red Squirrel, Sierra Nevada Red Squirrel, and the Tamiasciurus douglasii. These squirrels are known for being agile climbers and are often found scurrying along tree branches. The Douglas Squirrel is an important member of the forest ecosystem, and its role in seed dispersal and nutrient cycling makes it a vital part of the natural environment.