I've had my two gray treefrogs for about four days now, and I have a question about their behavior. One of them is usually a bright green and sleeps on a tree branch all the time. I guess this is normal, since they are nocturnal. The other one, however, is usually a light or dark gray, and spends most of his time trying to climb up one wall of the tank. He never seems to go to the other side of the tank and all day today he's been crawling up and down this one wall. He did this last night too. Why is one frog doing this and not the other? Why is he doing this if he's supposed to sleep during the daytime?



