National Geographic : 1950 Apr
() National Geographic Society + Like David Before Goliath, a Puny Swamp Cricket Frog Faces a Giant Bullfrog One is the smallest vertebrate, the other the largest frog in North America. Bullfrogs may reach 10 inches, weigh over three pounds. Pygmy Swamp Cricket Frogs (inset) seldom exceed /2 inch. Their cricketlike chirps are heard around ponds from North Carolina to Florida. Kodachromes by Arthur A. Allen + "Jug o' Rum!" Body and Throat Inflated, a Bullfrog Twangs His Bass Fiddle Croaking, he changes from dark green to light bronze. Pouch under chin is his vocal sac. Bullfrogs (Rana catesbeiana) eat anything they can catch-insects, small fish and snakes, other frogs, even birds. In turn, they are hunted for their own tasty hind legs.