Subspecific designations for the species are not fully addressed. As many as eight subspecies have been recognized, although further analyzes have not found support for any subspecies differentiation. However, although there is a clear need for more sub-specific clarification, most available data suggest that Kit Foxes in the San Joaquin Valley of California are likely to warrant a sub-specific designation, "V. m. mutica", due to geographical isolation, and that any other Kit Foxes may be included in a second subspecies, "V. m. macrotis".