"Frog," a language comprised of a collection of clicks and groans, was the native tongue of the Querm Rybet pair known as "Frog Lady" and her husband. During 9 ABY, the human technician Peli Motto enlisted the services of the Mandalorian Din Djarin for the purpose of transporting "Frog Lady" to the aquatic moon Trask; at this time, Motto communicated with "Frog Lady" in Frog and translated for Djarin. Throughout their journey, Djarin made it clear that he lacked the ability to speak Frog.
The Chapter 10: The Passenger episode, which was the second episode in The Mandalorian Season Two, marked the initial appearance of Frog. Although the episode does not explicitly state whether "Frog" is the official designation of the language or merely a moniker given to it by Din Djarin, the subtitles utilized this name, thereby affirming "Frog" as the correct terminology.