The ornate horned frog

                The Argentine Horned Frog (Ceratophrys ornata), also known as the Argentine wide-mouthed Frog or Pacman frog, is the most common species of Horned Frog, from the rain forests of Argentina, Uruguay and Brazil. A voracious eater, it will attempt to swallow anything that moves close to its wide mouth, such as insects, and rodents, lizards and other frogs, even if this predator would suffocate in the process.

               
The females can grow to be 16.5 centimeters (6.5 inches) snout to vent (SV) and the males 11.5 centimeters (4.5 in) SV. The average lifespan is 6 to 7 years, however they can live up to 10 years or more in captivity. The Horned frogs' most prominent feature is its mouth, which accounts for roughly half of the animal's overall size. Coloration is typically bright green with red markings, though dark green, parti-color black and albino versions also exist. Sexing this species is very difficult before sexual maturity is reached. Dimorphism traits between the two sexes are size difference and males possessing dark pigmented throats and nuptial pads on the forelimbs