Scientists have found a species of frog with at least three different accents.
Frog expert Julia Wycherly made the discovery when she was trying to find out which type of pool frog lived in East Anglia before it became extinct.
As well as different croaks, the three types of frog all had other small physical differences.
Ms Wycherly found out that the Balkan type of frog lived in East Anglia, and now plans to re-introduce a group of them to the area.
The groups of frogs, from the species Rana lessonae, developed in the Ice Age when the original species went to Spain, Italy and the Balkans.