Are we talking a normal bullfrog or a African bullfrog? I personally don't own one but If its the ABF I think there somewhat similar, but not 100% percent sure. You could start a new thread asking in the ABF section or I imagine someone who owns both or has had each at different times could answer. Sorry I couldn't help with that question, I love all different colours and species of Horned frogs so I have stuck with these guys.