My dear little salamander named Monticel was doing quite well for 2 months until about a week ago. He/she stopped eating entirely and has become quite thin. He still runs around in his container . It is a large plastic box with 3 inches of wet sand , leaves,and rocks for him to hide under and a container or water. I have been feeding him box alder bugs, flies, crickets, and worms but he wont even look at them now. I am rather worried.. please help if you have any ideas!