So hes 9 - 10 months now? If so then he still has quite a bit of time to catch up - he could grow another couple inches before his birthday - I had a 13 inch 11 month old female. Despite laying 3 clutches of eggs in the past 5 months (gravid when I got her!!) she has got up to 15 inches and still has a little bit of growing time left. However, take note of all spyder has said - make sure all of those things can be ruled out first!
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