Bullfrog - Rana Catesbeiana - A Handsome Bullfrog Sits Atop Of A Lily Pad In It's Natural Habitat. Bullfrogs Are Usually Green To Greenish-brown And Some Are Spotted. Their Eyes Are Gold Or Brown And They Have A Broad Flat Head And Body. They Grow On Average To Be About 3 And A Half To 6 Inches Long In Body Length. Males Have Yellow Throats And Eardrums Larger Than The Circumference Of The Eye. Photo