Frogs in Puerto Rico croak at a higher pitch due to global heating

Call of the coqui frog is affected by rising temperatures, scientists find

Frogs in Puerto Rico are croaking at a higher pitch due to global heating, scientists have found.

The frogs appear to be decreasing in size at warmer temperatures, which causes their croaks to become high pitched. If the trends continue, the heat could become too much for the sensitive amphibians to survive successfully, researchers have said.