Thanks for that, John. I will try rearranging the terrarium and see if that helps. I was avoiding doing that because I thought it might upset them more. I have noticed with some of my other frogs that when you rearrange their environment, they always seem to notice. Whenever I change the terrarium on my oriental fire bellied toads, they all troop out to examine the changes, as if they are doing a survey, or thinking "I'm sure that wasn't there before".