Brazos Bend State Park
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Gator Hatch


Rana catesbeiana


Description: Body 3 1/2 - 5 inches (9 - 15 cm). Our largest most recognizable frog. Green above with a netlike pattern of gray or brown. Belly is mottled pale yellow. Males have yellow speckled throats and ear tampanum (circular shape behind eye)that is larger than the eye. Females have white speckled throats and an ear tampanume that is the size of the eye or smaller.

Voice: Probably the easiest to recognize of all the frogs. It’s loud series of bass notes sounding like "RUMM,RUMM,RUMM" (often verbalized as "jug-o-rum, jug-o-rum"). The Bullfrogs calls serve as both breeding calls and territorial calls. Calls are most common from May - August.

Habitat: Bullfrogs are most commonly found in large permanent bodies of water. They can often be seen at waters edge or perched on floating vegetation.

Breeding: Breeding occurs from May - August at large permanent bodies of water. It is thought that females are attracted both by the call of a particular male as well as the territory he has claimed.

Range in Texas: Bullfrogs originally ranged over the eastern half of Texas. People have introduced Bullfrogs into areas of West Texas and the Western U.S. where they did not exist originally.

Notes: Bullfrogs have huge appetites and will eat almost anything they can fit in their mouth. They have been known to eat small turtles, snakes, birds and other frogs. With such a voracious appetites Bullfrogs have become a nuisance in some areas where they were introduced, causing serious declines in populations of native fish and frog species.

Updated: Aug 12, 2011