Robber Frog, Yucatan Peninsula, MexicoI believe this tiny little frog (about half an inch) to be in the genus Eleutherodactylus. There are about 200 species, commonly called robber frogs or rain frogs. They are known for their high pitched calls. I photographed this one in the Punta Laguna Nature Reserve in the Yucatan Peninsula of Mexico. Nikon D800 with Nikkor 105mm macro lens, ISO 1600, f/10 at 1/40th of a second.