Hylidae | spring peeper
3/4-1 1/4". The dark cross on the back is usually in the form of an X, but more often than not an imperfect one. This small frog varies through shades of yellow, brown, gray, or olive, but it is not distinctly striped, mottled, or spotted like other members of its genus.
Habitat: Woodlands that are especially abundant in areas of brushy second growth or cutover woodlots, if these are near small, temporary or semipermanent ponds or swamps.
Conant, R., & Collins, J. T. (1998). A field guide to reptiles & amphibians: eastern and central North America (3rd ed.). Boston: Houghton Mifflin.