I've had them before, I now have FB's. Someone wrote a while back saying their frogs/toads were in conditions way too cold and its a wonder frogs lived actually from being in that temp. Ever since I read that I have been writing that frogs/toads (and mine) don't like it so cold that it affects their lives. They do like it warm and somewhat humid. I control the humidity in my tank and check my heater every day. I watch the water temp and make sure mine are acting alright. Some say frogs/toads can survive without warmth. Well, I look at that like this: frogs can't talk and explain they're uncomfortable. They have no choice but to survive if without warmth. And the owner thinks they are ok.

When I top off my fish tank with warmer water the fish get more active. My bettas did that, too. I'm speaking on a frog's behalf. I am glad you have kept your bullfrog warm. Its ok to write and tell me about your frog and tank. Thanks