There are 19 species of ground squirrel found in North America; most of these are found in the western United States. Ground squirrels, unlike their tree dwelling relatives, prefer to inhabit underground burrows. The diet of a ground squirrel varies from location, but primarily consists of seeds, nuts, berries and small invertebrates.nnSpecifications:nnThe photos shown are examples of what your specimen will approximately look like. Each skull is unique and will vary in size, shape, color, etc.nnAverage Skull Length 4.3 cm (1.6 in.)nnAverage Skull Width 2.5 cm (0.9 in.)nnAverage Skull Height 2.1 cm (0.8 in.)nnOrigin: North America