So about march of last year i got my first spider, my avic avic and he was very energetic and agile. I understood he was a male when he molted in june of 2016 ajd he looked very thin and long legged typical of males and had the boxing gloves. Now i knew this was his final molt but i was confused because hes still on the small side (about a 3.5 inch legspan not completely sure more or less) well about a year later which is today he is resting on his joints and still alive but i understand he might be dying. My friend got him from petco so i cannot say for sure how old he is. I would like to preserve him since he was my first so any advice on preserving and helping the old man feel a bit more comfortable?