Anaxyrus debilis

The North American green toad (Anaxyrus debilis, formerly Bufo debilis) is a species of toad found in the southwestern United States in the states of Arizona, New Mexico, Colorado, Kansas, Oklahoma and Texas, as well as in northern Mexico in the states of Tamaulipas, San Luis Potosí, Durango, and Zacatecas. It is commonly called green toad (with many variants).

Description
Green toads are typically bright to pale green in color, with black spotting. They are not large toads; adult males are about 37 - 46 mm in snout–vent length and females 44 - 54 mm.

Habitat and reproduction
Green toads are relatively widespread and at least locally common. They are secretive, however, only readily found during and immediately after periods of rainfall; their habitat is semi-arid and often very dry. Breeding occurs from late March to August, stimulated by summer rains. Males move from drier, terrestrial habitat to aquatic breeding sites where they form choruses. Females are attracted by chorusing males. Breeding aggregations do not usually last long, only a few days.

Subspecies
Two subspecies, originally described as separate species, can be identified, but this distinction is disputed:
 * Eastern green toad, Anaxyrus debilis debilis
 * Western green toad, Anaxyrus debilis insidior