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Rana catesbeiana


American bullfrogs live longer in warm weather. Females have eardrums (tympana) the same size as their eyes. The males' eardrums are larger. We had a temperature of 103° F today, so the frogs in my pond were happy, I think. They were not croaking but the smaller one (a female, I believe) was constantly opening and closing her mouth, which serves to ventilate the buccal cavity and exchange gases through the richly vascularized lining of the mouth. The larger male just observed with his mouth closed.


Seen in my yard.

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Guillaume 8 years ago


harsuame 8 years ago

Grandiosa series:::

Maria dB
Maria dB 8 years ago

Thanks, Lisa, Jeannette and Karen! She does look happy rather than being in the throes of heavy breathing. :>)

Jeannette 8 years ago

Great series :)

LisaPowers 8 years ago

Very cool natural history information and terrific spotting!

KarenL 8 years ago

Great smile!

Maria dB
Maria dB 8 years ago

Thanks, Willie!

williefromwi 8 years ago

sweet series

Maria dB
Maria dB 8 years ago

Thanks, Antonio and Emma!

AntónioGinjaGinja 8 years ago

Beautiful Maria,as usual :) congrats

Maria dB
Maria dB 8 years ago

Thanks for your nice comments, Aaron and Bernadette!

Bernadette S
Bernadette S 8 years ago

Great captures!

Aaron_G 8 years ago

Nice spot. Looks like this one is doing a little skin sloughing. :-)

Maria dB
Spotted by
Maria dB

Chapel Hill, North Carolina, USA

Spotted on Jun 29, 2012
Submitted on Jun 30, 2012

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