Its head and body length is 2.7-3.3 in (6.8-8.4 cm), plus a tail of 1.7-2.5 in (4.3-5.1 cm). These beach mice are mainly found on the Johnson Beach unit of Gulf Islands National Seashore, Gulf State Park and Perdido Key State Park. The Perdido Key Beach Mouse is a federally listed endangered species that only resides in the dunes of Perdido Key, a small island located near Pensacola. One critical behavior the mice have is to forage for seeds and then store them underground. This species of beach mouse only live on Perdido Key, a barrier island that straddles the Florida and Alabama boundary.
The role of the Perdido Key Beach Mouse is often overlooked when people think of the habitat. The Perdido Key beach mouse, also known as the Florida beach mouse, has a small body, haired tail, relatively large ears, and protuberant eyes. The Perdido Key Beach Mouse utilizes much of the park as its natural habitat lies within the park boundaries.
Their bodies are grayish fawn to wood brown with a very pale-yellow hue. There are eight subspecies of beach mice, five of which live along the Gulf Coast.
Perdido Key beach mice have small bodies, hairy tails, large ears and big eyes.