Ursus arctos californicus, commonly known as the California grizzly bear, is a subspecies of the brown bear that once roamed the western United States. This bear was characterized by its large size, powerful build, and distinctive fur, which varied in color from light brown to dark brown. The California grizzly was an apex predator, primarily feeding on plants, fish, and small mammals. The California grizzly bear became extinct in the early 20th century, largely due to habitat loss and hunting. It was officially declared extinct in 1922. Today, it is remembered as a symbol of California's wildlife and is featured on the state flag, representing the state's natural heritage.