Breeding is known to occur at two coastal sites which flood when sufficient rainfall is received. In the Quebradillas area Peltophryne lemur has been observed breeding in permanent cattle watering troughs. Guanica Forest is a coastal forest in the southwestern part of Puerto Rico. Seven vegetation associations have been identified, containing a total of more than 700 species of plants. The Forest is underlain by limestone sedimentary rocks, Tertiary in origin.
Marine fossils are abundant.
Soils are derived from limestone and are shallow, well-drained and alkaline. Mean annual precipitation in Guanica is approximately 79 cm, distributed in distinct wet and dry seasons. Over 55 percent of the precipitation falls during the wet season, August through November. The dry season extends from January through March. Little is known about the food habits of the Puerto Rican crested toad in its natural environment.