Perognathus Hispidus, commonly known as the Hispid pocket mouse, is a small rodent species native to North America. There are several synonyms for this species, including Dipodomys hispidus, Chaetodipus hispidus, and Heteromys hispidus. These different scientific names reflect the taxonomic reclassifications and revisions that have occurred over time. The Hispid pocket mouse is known for its distinctive fur, which is covered in stiff, spiny hairs. It inhabits arid regions, where it feeds on seeds and insects. While this species may not be well-known outside of the scientific community, its presence plays an important role in the ecosystems it inhabits.