Is this frog a male or a female? How do you know?


With most frogs, you can look at the tympanum, the round circle behind the eye that serves as their ear. With males, the tympanum will be larger than the eye, while for females, the tympanum will be smaller or the same size as the eye. For this young Bullfrog, the tympanum is smaller than the eye, telling is that this is a female.