More than a century ago, American bullfrogs were introduced into the western United States in hopes that they could be farmed for food. Although the farming efforts failed, the bullfrog adapted to man-made ponds and waterways and is now a threat to native species of fish, snakes, birds, and other frogs—some of them endangered.

American Bullfrog
Rana catesbeiana
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Class: Amphibia
Family: Ranidae
Size: 3 ½ to 8 inches
Food: Insects, crayfish, frogs, fish, small mammals, birds
Range: Eastern and central U.S. - introduced in the western U.S.
Habitat: Aquatic - ponds, lakes, slow moving streams
Life Cycle: Females lay up to 20,000 eggs in long strings. Tadpoles take up to 2 years to metamorphose.