American Bullfrog Wrestling Behaviors. Laboratories, research facilities, and pet owners. American bullfrogs require a temperature gradient to control or regulate their body temperature.
Male bullfrogs are smaller than females, and have bright yellow throats. It is believed that the reason for this is that it allows their vocalizations to be louder and thus attract more females. Adult males are very aggressive and defend their territories, which can range from 3 to 25 meters of shoreline, by physically wrestling with others.