Scott (1983) observed that even when extensive deforestation and developing land for agriculture have occurred in south western Costa Rica, a high diversity of historically known herpetofauna was still present. It is therefore not too clear why only 12 species were recorded for a total of 1434 individuals after an intensive and extensive search in the study area whereas about 76 species of amphibians are believed to be housed in the African rain forest (Poynton, 1999; IUCN and NatureServe, 2004).