I'm new to this forum, and this is my first post. Up until now, our chinchillas have been very happy and quite spoiled. (nice big cages, good healthy food, wood blocks, dust baths often) Now the wood we have used are all apple. and the food is not rich in salt or sugar. So far we have raised 2 happy chins. We just got 2 new ones. Today while having the 2 original ones out, one of them (Dusty) did nothing but hide. this is very unusual for him. He is usually running all over the place. He also loves to be held. But today, all he wanted to do was hide in a crack in the couch. Every time we moved him away from there, he bolted back. Also, he has not moved off of the second shelf of his 4 shelf cage. I'm worried something may be wrong with him. Please help. Any advice will be greatly appreciated.