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Pig Frog
Rana grylio
(click images to enlarge)

Rana grylio - Pig Frog
Appearance:  Pig Frogs range in size from 3 1/4 - 5 1/2 in. (8.3 - 14 cm).  The pattern and coloration is variable.  Pig Frogs look like Bullfrogs.  Pig Frogs have narrow, pointed heads, and fully webbed hind feet. The webbing on the fourth toe extends virtually to the tip.  Pig Frogs are olive to blackish brown and with prominent, scattered dark spots. The venter is white or pale yellow with a netlike pattern of brown, dark gray, or black on thighs. The tympanum is larger in males than in females.
Rana grylio - Pig Frog
Habitat: Pig Frogs are highly aquatic and can be found in most waterways, including: rivers, streams, lakes, ponds, swamps, and marshes.  Pig Frogs may either float in open water or choose a station on or amid floating/emergent vegetation.  This is the Florida frog most commonly gigged by humans for their legs. 

Vocalization:  Pig Frogs sound like the guttural grunt of a pig.  Typical call: Rana grylio - typical call and aggression (Includes aggression call).

Rana grylio - Pig Frog - tadpoleReproduction/Eggs: Breeding choruses can be heard from April through the summer.  Females lay more than 10,000 eggs as a surface film that may adhere to surface or emergent vegetation.  Tadpoles in the northern part of the range take more than a year to metamorphose, those in the southern parts develop in considerably less time.

Rana grylio - Pig FrogAbundance: Pig Frogs occur in every county in the state of Florida. They may not be as common now as in past days--but you can still find them on nearly any warm night.

Range: Pig Frogs range from southern South Carolina to extreme south Florida and extreme southern Texas.  Pig Frogs have been introduced on Andros and New Providence Island in the Bahamas.

SE ARMI Index Sites: Okefenokee National Wildlife Refuge, Everglades National Park.



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Page Last Modified: Friday, 14-Dec-2012 13:09:09 EST