Pallid beach mouse

The pallid beach mouse or Ponce de Leon beach mouse (Peromyscus polionotus decoloratus), is an extinct subspecies of the oldfield mouse that was endemic to Florida in the United States.

Distribution
It was known from two locations in Florida: Ponce Park, Volusia County and Bulow, Flagler County.

Description
The average pallid beach mouse was 4 to 8 cm in length. This subspecies burrowed into dunes for protection.

Extinction
The exact cause of extinction is unknown, but it is presumed to have been from a combination of habitat destruction due to property development, competition with invasive rodents, and predation from feral cats.