Bullfrogs have teeth in the roof of their mouth and a muscular tongue capable of flipping prey into their mouth. Pretty much anything that will fit in their mouths. Large insects and worms should be left on the rocks, though these guys will eat them from the surface of the water too. Bullfrogs are territorial and protect their territories by calls, displays, chases, jump attacks, and even wrestling. Male bullfrogs chorus at breeding ponds.
Females also give aggressive calls and they respond to the breeding calls of the male frogs.
Females are attracted to males with the territories that provide the most food. A female bullfrog may lay up to 25,000 small eggs that are held together at the surface of the water. These guys are native to the eastern United States, ranging from as far north as Nova Scotia, all the way down to central Florida. They also live as far west as Wisconsin and the Rockies and were introduced widely throughout Colorado, British Columbia, California, and other western states. Where they occur naturally, bullfrogs help keep down the mosquito and insect population.