ooh tough one. Well.. you'll just have to move the froggie with him or get him a bigger froggie ! that is too cute ! i keep staring at it !!! Has he always done that ??
he's done it ever since i brought Froggie home for him. he lays on it during the day in his basking spot too...I move it off his basking spot at night so he can sleep on it, and during the day, if Froggie isn't moved to his basking spot, then he gets very dark, until I move the frog up to his spot, then his belly turns all creamy white...it's a good thing I haven't spoiled him, huh?
here is a link to some more pics of him on his Froggie...