The largest truly aquatic frog, the Titicaca water frog is found only in Lake Titicaca in South America. Its Latin name literally translates as "aquatic scrotum" — the multiple folds in its skin enable it to breathe underwater without needing to surface for air.
Comedian Iszi Lawrence highlighted the critter's inherent comedy value. "Scrotum frog, you heard me right, scrotum frog. Even better than being called scrotum frog, it lives in Lake Titicaca!"