I got my map treefrog yesterday. This is the first land frog I have owned. This morning I thought it had escaped, but after searching the vivarium, I found him buried in the moss.

I was wondering, is it normal for it to bury itself in the moss? I think it must do that to keep moist. If that is true, I must think that the frog thinks the air is too dry (which it is in a Minnesota winter). The tank is about 60% humidity at the top and 80% humidity at the bottom.