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American Bullfrog

Rana catesbeiana


They grow on average to be about 3.6 to 6 in. in body length, legs add another 7 to 10 in to length. Bullfrogs go from 5 to 175 g on average in the first 8 months of life. Large mature bullfrogs can weigh up to 500 g, with exceptional ones attaining 800 g. The bullfrog skull is highly fenestrated; females have eardrums (tympana) the same size as their eyes. The males' eardrums are larger.


They were native to North America, but they somehow got carried over to Eastern Hemisphere. Likes dark areas.


When I found it beside the stream, it was stying still like a rock so no one could see it among plants. So it's good at hiding.

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Spotted by

서울특별시 (Seoul), Republic of Korea

Spotted on Sep 16, 2012
Submitted on Sep 16, 2012


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