- quite skittish, not much activity or eating, rarely out and about, unable to climb without falling. But last night he emerged immediately after lights-out (before Crabswell, for the first time) and spent a lot of time eating (which was a great relief. The mango must have been too good to refuse). He then got up to a bit of trouble, climbing on all the plants and trying to get behind the coconut fibre backing to the crabitat (those flat decorative sheets). He finally got back there and was stuck for a while, so I put him back into the crabitat proper to explore and left it at that. This early-evening, assuming him to be buried in his hut, I went into the tank to add food and make some adjustments. Noticing that the coconut backsplash was loose, I went to fix it and found the Doctor behind it 
, very close to the top of the tank. I removed him again and he IMMEDIATELY (instead of running to hide) came back to his previous corner and began climbing the background sheet (making it to the top pretty darn quickly). Now I couldn't tell if he was trying to get to the backside of the coconut sheet or was trying to escape (tapping the glass) - but should I be concerned? I've since cut the height of the sheet down half the size, but a determined crab can do an awful lot in an evening. Also, could this be a sign of unhappiness 
? or exploration? I've added a few more things for him to climb throughout the tank (and he seems to have taken to them as well pretty quickly), but I feel like he really wanted to (and still does want to) get behind the backing to hide). Is this bad? Could he get seriously stuck or injured? His newfound energy has taken me aback, so I could use a bit of advice!Thanks!!
For your entertainment. His speedy ascension this evening (I took off the lid to retrieve him):
. My big guy does the whole checking-the-lid-for-escape-routes on a nightly basis. He'll get up to the top via the crocheted net, the vines or the fish net and will work his way around three sides of the tank along the corner guards. Until I figured out he was strong enough to push up the plastic flap at the back of the glass lid, he managed to get out twice (twice!) but was still on top of the outside of the tank when I captured him both times. Now that the flap is taped down onto the rear edge of the tank, he can't escape but still has high hopes. Silly crab 
. What they're both doing is perfectly normal: crabs climb, crabs explore. That cocomat has a very pleasing texture to crabby toes so, as long as there's no way Dr. Crabson can move the tank lid to effect an escape, don't worry and let him enjoy his escapades.
