Leptodactylus pentadactylus shine sunan kimiyya na "Giant South American Bullfrog" ko "Smiling Frog." Wani nau'in kwadi ne da ake samu a Kudancin Amurka, kuma sunan sa na kimiyya ya samo asali ne daga kalmomin Helenanci "lepto" ma'ana siriri ko sira, "dactylus" ma'ana yatsa ko yatsa, da "penta" ma'ana biyar, yana nufin lambobi biyar akan kowanne. hannu. Don haka, ma'anar ƙamus na "Leptodactylus pentadactylus" wani nau'in ɗan yatsa ne na kwaɗi da ake samu a Kudancin Amirka mai lambobi biyar akan kowace gaɓa.