Hello, i just added a 2nd whites tree frog to my tank. I just upgraded to the exo terra tall/small so its a pretty large terrarium. My new edition isnt really too interested in food but will eat here and there oppose to my 1st frog who will eat happily. The 2nd edition prefers to sleep on the wall for the most part. Is this normal? I am thinking about adding two more to my tank putting it at 4 max. Also, my 1st frog has been sleeping on top of the 2nd one. Is this a sign of affection?