The bullfrog is an aquatic, amphibian carnivore that lives in large colonies along the banks of swamps, ponds and lakes, in Canada, the United States and Mexico east of the Rockies. At night, the males emit a loud, cow-like noise that accounts for the name "bull" frog. These choruses have been known to keep people awake at night. Adults can weigh more than a pound, but the females turn out even larger than the males. Wild bullfrogs eat anything they can fit into their cavernous mouths, including insects, fish, small rodents and even small snakes. They hunt by ambush, leaping as far as a meter onto prey and summarily swallowing it.
Frog legs are considered a delicacy around the world, and bullfrogs' hind legs are routinely eaten in the South. The flesh is translucent white, consistently tender and good-tasting. This has led some people to attempt farming bullfrogs. There are frog farms in the South and in California that have been successful, though some extension services warn would-be entrepreneurs that farming bullfrogs is not easy. They are territorial, and when packed in too closely will resort to cannibalism. In addition, they grow slowly, and overcrowding can lead to decimation by disease.
If you want a pet bullfrog, remember what was said above about cannibalism. One frog per terrarium or aquarium is what you will get, whether you start with that or not. They require stones and water, enough water to submerge half their bodies and enough dry stones for them to rest out of water when they need to. They live to be 4 or 5 years old. Feed the frog plenty, and clean the terrarium or aquarium frequently. What goes in must come out. They will eat insects, worms, guppies or mice. You needn't do anything but leave the food critters in the container. The bullfrog will do the rest.
Frog hunting, or gigging, is a popular pastime in many places, often as a night sport, when a headlamp reflects red dots back from the frogs' eyes. It is generally illegal to shoot bullfrogs, so most bullfrog hunters use a long-handled piercing fork called a gig. Before heading over to the pond, check your state's game regulations. A license is required, usually a fishing license. There are also approved seasons, and there are catch limits.