DEEP: Bullfrog


(Rana catesbeiana)


IDENTIFICATION: A large, robust species distinguished by its green coloration, light belly mottled with gray, and a dorsum lacking any distinct, continuous longitudinal creases or folds. Adults 80-150 mm body length.

The bullfrog is a common species statewide. Favoring permanent bodies of water, this large frog is especially common at sites that are disturbed and degraded. Bullfrog populations are expanding in many areas where complex wetland systems, e.g., shrub swamps and vernal pools, are being replaced by impoundments or artificial ponds. Bull frogs are voracious predators of smaller animals. At sites where they become well-established, they can eliminate other frog species, through both competition for food and direct predation.

Frogs | Amphibians and Reptiles in Connecticut