alebron- it is not normal for WTF's to bury or sleep on the ground. this can be due to disease, but i think in your case it is due to not enough aboreal hiding spots. make sure he/she has plenty of hide spots high up in the tank, so he/she feels more secure in the 'trees'.
what type of moss do you have? is it in kinda large clumps? if so, than this is dangerous for the frog. if the frog lunges for a cricket and misses and takes a mouthful of moss he could die of intestenal impaction. if you get rid of the moss, and have some normal coco brick, or peat as a top layer substrate, this will stop the crix from hidding and get rid of a potential health hazard.
luke z
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