NORTH AMERICAN BULLFROG

Lithobates catesbaiana

TRUE FROG FAMILY (Ranidae)


Description
This is the largest native frog in North America. They can weigh up to a pound and reach up to 8 inches in length, but most are much smaller. They come in various shades of green, yellow and brown on top, with a whitish speckled throat and undersides. Sometimes a variable brown pattern is found on their backs (H,I). The males have a yellow throat during mating season (J). Males (D,E,J) have larger ears - the round structures (tympanum) behind the eye - than the females (A). Image "K" shows both male (above) and female for comparison. Image "L" shows a female specimen with a color variation.

Occurrence
Bullfrogs live in or near water, hibernate during winter. Their lifespan on average is 7-9 years. They are common in the Great Marsh and in water along Stream Trail in Fontenelle Forest. At Neale Woods, they are uncommon along MRE Trail.



Disclaimer: The content of NatureSearch is provided by dedicated volunteer Naturalists of Fontenelle Nature Association who strive to provide the most accurate information available. Contributors of the images retain their copyrights. The point of contact for this page is: Loren Padelford.

 

 

 

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