Advertisement Sorry for another question about "is the tarantula in pre moult?" Question. I have this Monocentropus balfouri sling and it ate for a few meals then has not ate in 2 weeks I think. It's not very active but it is still able to climb walls and all. No matter what size prey or if it is alive or not; it just ignores them. It is webbing more. However, the tarantula doesn't look fat or big boned enough to be in premolt.. sorry for the bad pic. The tarantula is either there or in it's hole most of the time.