南美角蛙分布南美洲中北部。幼体通常呈浅绿色，成体则大部分为褐色（也有绿色或橘色但很稀少），是此种的最大特色，全身有较大的不规则斑块，脸部也呈斑块状。本种在干旱期会自己用茧包起埋在地下，到了雨季来临会爬出来繁殖。一次有12～35个卵块附着在水草上。全部约有2000～4000颗卵。体长7.5~12.5cm。目前市面上的角蛙（包括白子）大部分为本种。

Cranwell's horned frog (Ceratophrys cranwelli), also called the Chacoan horned frog, is a terrestrial frog endemic to the dry Gran Chaco region of Argentina, Bolivia, Paraguay and Brazil. Like most members of the genus Ceratophrys, they are often considered Pacman frogs because of their resemblance to the popular video game character of the same name. Most adult species range from 8–13 cm long (3–5 in) and can weigh up to 0.5 kg (1 lb).