This is the largest native frog in North America. They can weigh up to a pound and reach up to 8 inches in length, but most are much smaller. They come in various shades of green, yellow and brown on top, with a whitish speckled throat and undersides. Sometimes a variable brown pattern is found on their backs (H,I). The males have a yellow throat during mating season (J). Males (D,E,J) have larger ears – the round structures (tympanum) behind the eye – than the females (A). Image “K” shows both male (above) and female for comparison. Image “L” shows a female specimen with a color variation.