Southern Leopard Frog
Lithobates sphenocephalus

The Southern Leopard Frog (Lithobates sphenocephalus) ranges over the southeastern United States.   In the region of Texas where I live, the Southern Leopard Frog and the Rio Grande Leopard Frog (Lithobates berlandieri) come together.  Although the two species are similar looking, they have different calls.

These Southern Leopard Frogs were calling from a flooded grassy pond on a cool fall day.  This is the southwestern edge of their range.

The call consists of two parts.  The first part is sort of a chuckling call:

Here is the spectrogram for that part of the call:

The second part of the call is more of a typical frog "croak":

And here's the spetrogram for that part of the call:

© Chris Harrison 2012

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